{"id":1445,"date":"2020-10-25T16:36:00","date_gmt":"2020-10-25T15:36:00","guid":{"rendered":"https:\/\/www.mathematicus.it\/?page_id=1445"},"modified":"2025-07-02T20:39:21","modified_gmt":"2025-07-02T18:39:21","slug":"mathematicus-i-giochi-matematici-di-cesare-baj","status":"publish","type":"page","link":"https:\/\/www.mathematicus.it\/en\/","title":{"rendered":"Mathematicus &#8211; Mathematical games by Cesare Baj"},"content":{"rendered":"<p><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1248px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-image-element \" style=\"--awb-caption-title-font-family:var(--h2_typography-font-family);--awb-caption-title-font-weight:var(--h2_typography-font-weight);--awb-caption-title-font-style:var(--h2_typography-font-style);--awb-caption-title-size:var(--h2_typography-font-size);--awb-caption-title-transform:var(--h2_typography-text-transform);--awb-caption-title-line-height:var(--h2_typography-line-height);--awb-caption-title-letter-spacing:var(--h2_typography-letter-spacing);\"><span class=\" fusion-imageframe imageframe-none imageframe-1 hover-type-none\"><img decoding=\"async\" width=\"2560\" height=\"2002\" alt=\"Gioco da tavolo Mathematicus\" title=\"Mathematicus &#8211; Components_1\" src=\"https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Mathematicus-Components_1-1-scaled.jpg?fit=2560%2C2002&ssl=1\" data-orig-src=\"https:\/\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Mathematicus-Components_1-1-scaled.jpg\" class=\"lazyload img-responsive wp-image-4523\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%272560%27%20height%3D%272002%27%20viewBox%3D%270%200%202560%202002%27%3E%3Crect%20width%3D%272560%27%20height%3D%272002%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-srcset=\"https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Mathematicus-Components_1-1-scaled.jpg?resize=200%2C156&amp;ssl=1 200w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Mathematicus-Components_1-1-scaled.jpg?resize=300%2C235&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Mathematicus-Components_1-1-scaled.jpg?resize=400%2C313&amp;ssl=1 400w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Mathematicus-Components_1-1-scaled.jpg?resize=500%2C391&amp;ssl=1 500w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Mathematicus-Components_1-1-scaled.jpg?resize=600%2C469&amp;ssl=1 600w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Mathematicus-Components_1-1-scaled.jpg?resize=700%2C547&amp;ssl=1 700w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Mathematicus-Components_1-1-scaled.jpg?resize=768%2C601&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Mathematicus-Components_1-1-scaled.jpg?resize=800%2C626&amp;ssl=1 800w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Mathematicus-Components_1-1-scaled.jpg?resize=1024%2C801&amp;ssl=1 1024w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Mathematicus-Components_1-1-scaled.jpg?resize=1200%2C938&amp;ssl=1 1200w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Mathematicus-Components_1-1-scaled.jpg?resize=1536%2C1201&amp;ssl=1 1536w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Mathematicus-Components_1-1-scaled.jpg?w=2400&amp;ssl=1 2400w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Mathematicus-Components_1-1-scaled.jpg?w=2560&amp;ssl=1 2560w\" data-sizes=\"auto\" data-orig-sizes=\"(max-width: 1024px) 100vw, (max-width: 640px) 100vw, 1200px\" \/><\/span><\/div><\/div><\/div><\/div><\/div><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-2 fusion-flex-container nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-padding-top:0px;--awb-padding-right:0px;--awb-padding-bottom:0px;--awb-padding-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-stretch fusion-flex-justify-content-space-between fusion-flex-content-wrap\" style=\"max-width:1248px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-1 fusion_builder_column_1_2 1_2 fusion-flex-column fusion-no-small-visibility\" style=\"--awb-padding-top:0px;--awb-padding-right:0px;--awb-padding-bottom:0px;--awb-padding-left:0px;--awb-bg-size:cover;--awb-width-large:50%;--awb-margin-top-large:0px;--awb-spacing-right-large:0px;--awb-margin-bottom-large:20px;--awb-spacing-left-large:3.84%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-image-element \" style=\"--awb-caption-title-font-family:var(--h2_typography-font-family);--awb-caption-title-font-weight:var(--h2_typography-font-weight);--awb-caption-title-font-style:var(--h2_typography-font-style);--awb-caption-title-size:var(--h2_typography-font-size);--awb-caption-title-transform:var(--h2_typography-text-transform);--awb-caption-title-line-height:var(--h2_typography-line-height);--awb-caption-title-letter-spacing:var(--h2_typography-letter-spacing);\"><span class=\" fusion-imageframe imageframe-none imageframe-2 hover-type-none\"><img decoding=\"async\" width=\"1024\" height=\"905\" title=\"WhatsApp Image 2025-06-23 at 23.10.18\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27808%27%20height%3D%27990%27%20viewBox%3D%270%200%20808%20990%27%3E%3Crect%20width%3D%27808%27%20height%3D%27990%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-orig-src=\"https:\/\/www.mathematicus.it\/wp-content\/uploads\/2025\/07\/WhatsApp-Image-2025-06-23-at-23.10.18-1024x905.jpeg\" alt class=\"lazyload img-responsive wp-image-5166\"\/><\/span><\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-2 fusion_builder_column_1_2 1_2 fusion-flex-column\" style=\"--awb-padding-right:15px;--awb-padding-left:20px;--awb-bg-color:#ffefd3;--awb-bg-color-hover:#ffefd3;--awb-bg-size:cover;--awb-width-large:50%;--awb-margin-top-large:0px;--awb-spacing-right-large:3.84%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:0px;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-1\" style=\"--awb-text-transform:none;\"><h4>MATHEMATICUS<br \/>\nThe game of mathematics<\/h4>\n<p>The most comprehensive mathematical game ever produced, for players aged from 8 to 99 years old<\/p>\n<ul>\n<li>Game board<\/li>\n<li>416 cards containing 1,600 questions organised into 4 levels of difficulty and stored in a wooden case<\/li>\n<li>7 advanced game mode cards<\/li>\n<li>Instruction manual (24 pages)<\/li>\n<li>Book of mathematical curiosities (176 pages)<\/li>\n<li>Slide Rule<\/li>\n<li>40 Napier\u2019s Bones<\/li>\n<li>165 tokens featuring digits of various numeral systems<\/li>\n<li>49 tokens for use during game play<\/li>\n<li>4 dice, 5 pawns and 2 hourglasses<\/li>\n<\/ul>\n<p>The box contains 525 pieces and printed parts featuring 1,428 illustrations.<\/p>\n<p><a href=\"https:\/\/www.mathematicus.it\/en\/mathematicus-il-gioco-della-matematica\/\">Learn more<\/a> about the Mathematicus game<br \/>\nDownload <a href=\"https:\/\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/2-Mathematicus-Presentation.pdf\">PDF presentation<\/a><\/p>\n<\/div><\/div><\/div><\/div><\/div><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-3 fusion-flex-container nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1248px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-3 fusion_builder_column_1_2 1_2 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:50%;--awb-margin-top-large:0px;--awb-spacing-right-large:3.84%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:3.84%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-builder-row fusion-builder-row-inner fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"--awb-flex-grow:0;--awb-flex-grow-medium:0;--awb-flex-grow-small:0;--awb-flex-shrink:0;--awb-flex-shrink-medium:0;--awb-flex-shrink-small:0;width:104% !important;max-width:104% !important;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column_inner fusion-builder-nested-column-0 fusion_builder_column_inner_1_2 1_2 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:50%;--awb-margin-top-large:0px;--awb-spacing-right-large:3.84%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:3.84%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-2\"><h4>Istruction manual<\/h4>\n<\/div><div class=\"fusion-image-element \" style=\"--awb-margin-bottom:20px;--awb-caption-title-font-family:var(--h2_typography-font-family);--awb-caption-title-font-weight:var(--h2_typography-font-weight);--awb-caption-title-font-style:var(--h2_typography-font-style);--awb-caption-title-size:var(--h2_typography-font-size);--awb-caption-title-transform:var(--h2_typography-text-transform);--awb-caption-title-line-height:var(--h2_typography-line-height);--awb-caption-title-letter-spacing:var(--h2_typography-letter-spacing);\"><span class=\" fusion-imageframe imageframe-none imageframe-3 hover-type-none\"><a class=\"fusion-no-lightbox\" href=\"https:\/\/www.mathematicus.it\/wp-content\/uploads\/2023\/08\/MATHEMATICUS-Instructions_EN.pdf\" target=\"_self\" aria-label=\"MATHEMATICUS &#8211; Instructions_EN-1\"><img decoding=\"async\" width=\"724\" height=\"1024\" src=\"https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2023\/08\/MATHEMATICUS-Instructions_EN-1.jpg?fit=1754%2C2480&ssl=1\" data-orig-src=\"https:\/\/www.mathematicus.it\/wp-content\/uploads\/2023\/08\/MATHEMATICUS-Instructions_EN-1-724x1024.jpg\" alt class=\"lazyload img-responsive wp-image-1622\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%271754%27%20height%3D%272480%27%20viewBox%3D%270%200%201754%202480%27%3E%3Crect%20width%3D%271754%27%20height%3D%272480%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-srcset=\"https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2023\/08\/MATHEMATICUS-Instructions_EN-1.jpg?resize=200%2C283&amp;ssl=1 200w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2023\/08\/MATHEMATICUS-Instructions_EN-1.jpg?resize=212%2C300&amp;ssl=1 212w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2023\/08\/MATHEMATICUS-Instructions_EN-1.jpg?resize=400%2C566&amp;ssl=1 400w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2023\/08\/MATHEMATICUS-Instructions_EN-1.jpg?resize=500%2C707&amp;ssl=1 500w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2023\/08\/MATHEMATICUS-Instructions_EN-1.jpg?resize=600%2C848&amp;ssl=1 600w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2023\/08\/MATHEMATICUS-Instructions_EN-1.jpg?resize=700%2C990&amp;ssl=1 700w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2023\/08\/MATHEMATICUS-Instructions_EN-1.jpg?resize=724%2C1024&amp;ssl=1 724w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2023\/08\/MATHEMATICUS-Instructions_EN-1.jpg?resize=768%2C1086&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2023\/08\/MATHEMATICUS-Instructions_EN-1.jpg?resize=800%2C1131&amp;ssl=1 800w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2023\/08\/MATHEMATICUS-Instructions_EN-1.jpg?resize=1086%2C1536&amp;ssl=1 1086w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2023\/08\/MATHEMATICUS-Instructions_EN-1.jpg?resize=1200%2C1697&amp;ssl=1 1200w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2023\/08\/MATHEMATICUS-Instructions_EN-1.jpg?resize=1448%2C2048&amp;ssl=1 1448w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2023\/08\/MATHEMATICUS-Instructions_EN-1.jpg?w=1754&amp;ssl=1 1754w\" data-sizes=\"auto\" data-orig-sizes=\"(max-width: 1024px) 100vw, (max-width: 640px) 100vw, 600px\" \/><\/a><\/span><\/div><div class=\"fusion-text fusion-text-3\"><p>Download the <a href=\"https:\/\/www.mathematicus.it\/wp-content\/uploads\/2023\/08\/MATHEMATICUS-Instructions_EN.pdf\">Mathematicus instruction manual<\/a>.<\/p>\n<\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column_inner fusion-builder-nested-column-1 fusion_builder_column_inner_1_2 1_2 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:50%;--awb-margin-top-large:0px;--awb-spacing-right-large:3.84%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:3.84%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-4\"><h4>The author<\/h4>\n<\/div><div class=\"fusion-image-element \" style=\"--awb-margin-bottom:20px;--awb-caption-title-font-family:var(--h2_typography-font-family);--awb-caption-title-font-weight:var(--h2_typography-font-weight);--awb-caption-title-font-style:var(--h2_typography-font-style);--awb-caption-title-size:var(--h2_typography-font-size);--awb-caption-title-transform:var(--h2_typography-text-transform);--awb-caption-title-line-height:var(--h2_typography-line-height);--awb-caption-title-letter-spacing:var(--h2_typography-letter-spacing);\"><span class=\" fusion-imageframe imageframe-none imageframe-4 hover-type-none\"><img decoding=\"async\" width=\"913\" height=\"1024\" title=\"Cesare Baj &#8211; Progettista di regoli calcolatori, divulgatore scientifico, aviatore.\" src=\"https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2020\/10\/Cesare-Baj-con-regolo.jpg?fit=960%2C1077&ssl=1\" data-orig-src=\"https:\/\/www.mathematicus.it\/wp-content\/uploads\/2020\/10\/Cesare-Baj-con-regolo-913x1024.jpg\" alt class=\"lazyload img-responsive wp-image-1283\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27960%27%20height%3D%271077%27%20viewBox%3D%270%200%20960%201077%27%3E%3Crect%20width%3D%27960%27%20height%3D%271077%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-srcset=\"https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2020\/10\/Cesare-Baj-con-regolo.jpg?resize=200%2C224&amp;ssl=1 200w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2020\/10\/Cesare-Baj-con-regolo.jpg?resize=267%2C300&amp;ssl=1 267w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2020\/10\/Cesare-Baj-con-regolo.jpg?resize=400%2C449&amp;ssl=1 400w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2020\/10\/Cesare-Baj-con-regolo.jpg?resize=500%2C561&amp;ssl=1 500w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2020\/10\/Cesare-Baj-con-regolo.jpg?resize=600%2C673&amp;ssl=1 600w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2020\/10\/Cesare-Baj-con-regolo.jpg?resize=700%2C785&amp;ssl=1 700w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2020\/10\/Cesare-Baj-con-regolo.jpg?resize=768%2C862&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2020\/10\/Cesare-Baj-con-regolo.jpg?resize=800%2C898&amp;ssl=1 800w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2020\/10\/Cesare-Baj-con-regolo.jpg?resize=913%2C1024&amp;ssl=1 913w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2020\/10\/Cesare-Baj-con-regolo.jpg?w=960&amp;ssl=1 960w\" data-sizes=\"auto\" data-orig-sizes=\"(max-width: 1024px) 100vw, (max-width: 640px) 100vw, 600px\" \/><\/span><\/div><div class=\"fusion-text fusion-text-5\"><p><strong>Cesare Baj<\/strong>: scientific writer, designer of analogue computing instruments, constructor of sundials, aviator.<br \/>\nLearn more about <a href=\"https:\/\/www.mathematicus.it\/en\/kit-e-gadget-prodotti-da-cesare-baj\/\">the author<\/a>.<\/p>\n<\/div><\/div><\/div><\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-4 fusion_builder_column_1_2 1_2 fusion-flex-column fusion-no-small-visibility\" style=\"--awb-bg-size:cover;--awb-width-large:50%;--awb-margin-top-large:0px;--awb-spacing-right-large:3.84%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:3.84%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\" data-scroll-devices=\"small-visibility,medium-visibility,large-visibility\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-6\" style=\"--awb-text-transform:none;\"><h4>Video presentation (English subtitle)<\/h4>\n<\/div><a class=\"fusion-modal-text-link\" href=\"#\"><iframe class=\"lazyload\" title=\"YouTube video player\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27560%27%20height%3D%27315%27%20viewBox%3D%270%200%20560%20315%27%3E%3Crect%20width%3D%27560%27%20height%3D%27315%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-orig-src=\"https:\/\/www.youtube.com\/embed\/ownJodAuu80?si=1MXQj4fqC3nfhWBg\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/a><div class=\"fusion-text fusion-text-7\"><p><strong>Ilaria Fanelli <\/strong>(<a href=\"https:\/\/www.ilariafmath.com\/\" target=\"_blank\" rel=\"noopener\">www.ilariafmath.com<\/a>), an accomplished blogger and math teacher, presents the game<\/p>\n<\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-5 fusion_builder_column_1_2 1_2 fusion-flex-column fusion-no-medium-visibility fusion-no-large-visibility\" style=\"--awb-bg-size:cover;--awb-width-large:50%;--awb-margin-top-large:0px;--awb-spacing-right-large:3.84%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:3.84%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\" data-scroll-devices=\"small-visibility,medium-visibility,large-visibility\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-8\" style=\"--awb-text-transform:none;\"><h4>Video presentation (English subtitle)<\/h4>\n<\/div><a class=\"fusion-modal-text-link\" href=\"#\"><iframe class=\"lazyload\" title=\"YouTube video player\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27360%27%20height%3D%270%27%20viewBox%3D%270%200%20360%200%27%3E%3Crect%20width%3D%27360%27%20height%3D%270%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-orig-src=\"https:\/\/www.youtube.com\/embed\/ownJodAuu80?si=1MXQj4fqC3nfhWBg\" width=\"360\" height=\"auto\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/a><div class=\"fusion-text fusion-text-9\"><p><strong>Ilaria Fanelli <\/strong>(<a href=\"https:\/\/www.ilariafmath.com\/\" target=\"_blank\" rel=\"noopener\">www.ilariafmath.com<\/a>), an accomplished blogger and math teacher, presents the game<\/p>\n<\/div><\/div><\/div><\/div><\/div><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-4 fusion-flex-container nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1248px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-6 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-10\" style=\"--awb-text-color:rgba(86,86,86,0.16);\"><h2 style=\"text-align: center;\">Other mathematical products<\/h2>\n<\/div><\/div><\/div><\/div><\/div><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-5 fusion-flex-container nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1248px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-7 fusion_builder_column_1_4 1_4 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:25%;--awb-margin-top-large:0px;--awb-spacing-right-large:7.68%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:7.68%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-image-element \" style=\"--awb-caption-title-font-family:var(--h2_typography-font-family);--awb-caption-title-font-weight:var(--h2_typography-font-weight);--awb-caption-title-font-style:var(--h2_typography-font-style);--awb-caption-title-size:var(--h2_typography-font-size);--awb-caption-title-transform:var(--h2_typography-text-transform);--awb-caption-title-line-height:var(--h2_typography-line-height);--awb-caption-title-letter-spacing:var(--h2_typography-letter-spacing);\"><span class=\" fusion-imageframe imageframe-none imageframe-5 hover-type-none\"><img decoding=\"async\" width=\"2560\" height=\"1708\" title=\"Napier_s bones\" src=\"https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Napier_s-bones-scaled.jpg?fit=2560%2C1708&ssl=1\" data-orig-src=\"https:\/\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Napier_s-bones-scaled.jpg\" alt class=\"lazyload img-responsive wp-image-4476\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%272560%27%20height%3D%271708%27%20viewBox%3D%270%200%202560%201708%27%3E%3Crect%20width%3D%272560%27%20height%3D%271708%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-srcset=\"https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Napier_s-bones-scaled.jpg?resize=200%2C133&amp;ssl=1 200w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Napier_s-bones-scaled.jpg?resize=300%2C200&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Napier_s-bones-scaled.jpg?resize=400%2C267&amp;ssl=1 400w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Napier_s-bones-scaled.jpg?resize=500%2C334&amp;ssl=1 500w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Napier_s-bones-scaled.jpg?resize=600%2C400&amp;ssl=1 600w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Napier_s-bones-scaled.jpg?resize=700%2C467&amp;ssl=1 700w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Napier_s-bones-scaled.jpg?resize=768%2C513&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Napier_s-bones-scaled.jpg?resize=800%2C534&amp;ssl=1 800w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Napier_s-bones-scaled.jpg?resize=1024%2C683&amp;ssl=1 1024w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Napier_s-bones-scaled.jpg?resize=1200%2C801&amp;ssl=1 1200w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Napier_s-bones-scaled.jpg?resize=1536%2C1025&amp;ssl=1 1536w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Napier_s-bones-scaled.jpg?w=2400&amp;ssl=1 2400w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Napier_s-bones-scaled.jpg?w=2560&amp;ssl=1 2560w\" data-sizes=\"auto\" data-orig-sizes=\"(max-width: 1024px) 100vw, (max-width: 640px) 100vw, 400px\" \/><\/span><\/div><div class=\"fusion-text fusion-text-11\"><h4>NAPIER&#8217;S BONES<br \/>\n<em>Calculating using the ancient method invented by John Napier<\/em><\/h4>\n<p><a href=\"https:\/\/www.mathematicus.it\/en\/napiers-bones-calculating-using-the-ancient-method-invented-by-john-napier\/\">Learn more<\/a> about the Napier&#8217;s Bones<\/p>\n<\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-8 fusion_builder_column_1_4 1_4 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:25%;--awb-margin-top-large:0px;--awb-spacing-right-large:7.68%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:7.68%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-image-element \" style=\"--awb-caption-title-font-family:var(--h2_typography-font-family);--awb-caption-title-font-weight:var(--h2_typography-font-weight);--awb-caption-title-font-style:var(--h2_typography-font-style);--awb-caption-title-size:var(--h2_typography-font-size);--awb-caption-title-transform:var(--h2_typography-text-transform);--awb-caption-title-line-height:var(--h2_typography-line-height);--awb-caption-title-letter-spacing:var(--h2_typography-letter-spacing);\"><span class=\" fusion-imageframe imageframe-none imageframe-6 hover-type-none\"><img decoding=\"async\" width=\"2560\" height=\"1763\" title=\"Stomachion\" src=\"https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Stomachion-scaled.jpg?fit=2560%2C1763&ssl=1\" data-orig-src=\"https:\/\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Stomachion-scaled.jpg\" alt class=\"lazyload img-responsive wp-image-4480\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%272560%27%20height%3D%271763%27%20viewBox%3D%270%200%202560%201763%27%3E%3Crect%20width%3D%272560%27%20height%3D%271763%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-srcset=\"https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Stomachion-scaled.jpg?resize=200%2C138&amp;ssl=1 200w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Stomachion-scaled.jpg?resize=300%2C207&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Stomachion-scaled.jpg?resize=400%2C275&amp;ssl=1 400w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Stomachion-scaled.jpg?resize=500%2C344&amp;ssl=1 500w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Stomachion-scaled.jpg?resize=600%2C413&amp;ssl=1 600w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Stomachion-scaled.jpg?resize=700%2C482&amp;ssl=1 700w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Stomachion-scaled.jpg?resize=768%2C529&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Stomachion-scaled.jpg?resize=800%2C551&amp;ssl=1 800w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Stomachion-scaled.jpg?resize=1024%2C705&amp;ssl=1 1024w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Stomachion-scaled.jpg?resize=1200%2C826&amp;ssl=1 1200w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Stomachion-scaled.jpg?resize=1536%2C1058&amp;ssl=1 1536w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Stomachion-scaled.jpg?w=2400&amp;ssl=1 2400w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Stomachion-scaled.jpg?w=2560&amp;ssl=1 2560w\" data-sizes=\"auto\" data-orig-sizes=\"(max-width: 1024px) 100vw, (max-width: 640px) 100vw, 400px\" \/><\/span><\/div><div class=\"fusion-text fusion-text-12\"><h4>STOMACHION<br \/>\n<em>The mathematical game attributed to Archimedes<\/em><\/h4>\n<p><a href=\"https:\/\/www.mathematicus.it\/en\/stomachion-the-mathematical-game-attributed-to-archimedes\/\">Learn more<\/a> about Stomachion<\/p>\n<\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-9 fusion_builder_column_1_4 1_4 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:25%;--awb-margin-top-large:0px;--awb-spacing-right-large:7.68%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:7.68%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-image-element \" style=\"--awb-caption-title-font-family:var(--h2_typography-font-family);--awb-caption-title-font-weight:var(--h2_typography-font-weight);--awb-caption-title-font-style:var(--h2_typography-font-style);--awb-caption-title-size:var(--h2_typography-font-size);--awb-caption-title-transform:var(--h2_typography-text-transform);--awb-caption-title-line-height:var(--h2_typography-line-height);--awb-caption-title-letter-spacing:var(--h2_typography-letter-spacing);\"><span class=\" fusion-imageframe imageframe-none imageframe-7 hover-type-none\"><img decoding=\"async\" width=\"2560\" height=\"1708\" title=\"Promptuarium multiplicationis\" src=\"https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Promptuarium-multiplicationis-scaled.jpg?fit=2560%2C1708&ssl=1\" data-orig-src=\"https:\/\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Promptuarium-multiplicationis-scaled.jpg\" alt class=\"lazyload img-responsive wp-image-4482\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%272560%27%20height%3D%271708%27%20viewBox%3D%270%200%202560%201708%27%3E%3Crect%20width%3D%272560%27%20height%3D%271708%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-srcset=\"https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Promptuarium-multiplicationis-scaled.jpg?resize=200%2C133&amp;ssl=1 200w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Promptuarium-multiplicationis-scaled.jpg?resize=300%2C200&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Promptuarium-multiplicationis-scaled.jpg?resize=400%2C267&amp;ssl=1 400w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Promptuarium-multiplicationis-scaled.jpg?resize=500%2C334&amp;ssl=1 500w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Promptuarium-multiplicationis-scaled.jpg?resize=600%2C400&amp;ssl=1 600w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Promptuarium-multiplicationis-scaled.jpg?resize=700%2C467&amp;ssl=1 700w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Promptuarium-multiplicationis-scaled.jpg?resize=768%2C513&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Promptuarium-multiplicationis-scaled.jpg?resize=800%2C534&amp;ssl=1 800w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Promptuarium-multiplicationis-scaled.jpg?resize=1024%2C683&amp;ssl=1 1024w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Promptuarium-multiplicationis-scaled.jpg?resize=1200%2C801&amp;ssl=1 1200w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Promptuarium-multiplicationis-scaled.jpg?resize=1536%2C1025&amp;ssl=1 1536w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Promptuarium-multiplicationis-scaled.jpg?w=2400&amp;ssl=1 2400w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Promptuarium-multiplicationis-scaled.jpg?w=2560&amp;ssl=1 2560w\" data-sizes=\"auto\" data-orig-sizes=\"(max-width: 1024px) 100vw, (max-width: 640px) 100vw, 400px\" \/><\/span><\/div><div class=\"fusion-text fusion-text-13\" style=\"--awb-text-transform:none;\"><h4>PROMPTUARIUM MULTPLICATIONIS<br \/>\n<em>Calculating using strips, a device invented by John Napier<\/em><\/h4>\n<p><a href=\"https:\/\/www.mathematicus.it\/en\/promptuarium-multiplicationis-calculating-using-strips-a-device-invented-by-john-napier\/\">Learn more<\/a> about Promptuarium multiplicationis<\/p>\n<\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-10 fusion_builder_column_1_4 1_4 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:25%;--awb-margin-top-large:0px;--awb-spacing-right-large:7.68%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:7.68%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-image-element \" style=\"--awb-caption-title-font-family:var(--h2_typography-font-family);--awb-caption-title-font-weight:var(--h2_typography-font-weight);--awb-caption-title-font-style:var(--h2_typography-font-style);--awb-caption-title-size:var(--h2_typography-font-size);--awb-caption-title-transform:var(--h2_typography-text-transform);--awb-caption-title-line-height:var(--h2_typography-line-height);--awb-caption-title-letter-spacing:var(--h2_typography-letter-spacing);\"><span class=\" fusion-imageframe imageframe-none imageframe-8 hover-type-none\"><img decoding=\"async\" width=\"2560\" height=\"1708\" title=\"Solids of constant width\" src=\"https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Solids-of-constant-width-scaled.jpg?fit=2560%2C1708&ssl=1\" data-orig-src=\"https:\/\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Solids-of-constant-width-scaled.jpg\" alt class=\"lazyload img-responsive wp-image-4484\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%272560%27%20height%3D%271708%27%20viewBox%3D%270%200%202560%201708%27%3E%3Crect%20width%3D%272560%27%20height%3D%271708%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-srcset=\"https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Solids-of-constant-width-scaled.jpg?resize=200%2C133&amp;ssl=1 200w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Solids-of-constant-width-scaled.jpg?resize=300%2C200&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Solids-of-constant-width-scaled.jpg?resize=400%2C267&amp;ssl=1 400w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Solids-of-constant-width-scaled.jpg?resize=500%2C334&amp;ssl=1 500w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Solids-of-constant-width-scaled.jpg?resize=600%2C400&amp;ssl=1 600w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Solids-of-constant-width-scaled.jpg?resize=700%2C467&amp;ssl=1 700w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Solids-of-constant-width-scaled.jpg?resize=768%2C513&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Solids-of-constant-width-scaled.jpg?resize=800%2C534&amp;ssl=1 800w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Solids-of-constant-width-scaled.jpg?resize=1024%2C683&amp;ssl=1 1024w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Solids-of-constant-width-scaled.jpg?resize=1200%2C801&amp;ssl=1 1200w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Solids-of-constant-width-scaled.jpg?resize=1536%2C1025&amp;ssl=1 1536w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Solids-of-constant-width-scaled.jpg?w=2400&amp;ssl=1 2400w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/03\/Solids-of-constant-width-scaled.jpg?w=2560&amp;ssl=1 2560w\" data-sizes=\"auto\" data-orig-sizes=\"(max-width: 1024px) 100vw, (max-width: 640px) 100vw, 400px\" \/><\/span><\/div><div class=\"fusion-text fusion-text-14\"><h4>COSTANT WIDTH SOLIDS<br \/>\n<em>Based on Rouleaux triangle<\/em><\/h4>\n<p><a href=\"https:\/\/www.mathematicus.it\/en\/solids-of-constant-amplitude-based-on-the-releaux-triangle\/\">Learn more<\/a> about Constant width solids<\/p>\n<\/div><\/div><\/div><\/div><\/div><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-6 fusion-flex-container has-pattern-background has-mask-background nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1248px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-11 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:1.92%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:1.92%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div style=\"text-align:center;\"><a class=\"fusion-button button-flat fusion-button-default-size button-default fusion-button-default button-1 fusion-button-default-span fusion-button-default-type\" target=\"_self\" href=\"https:\/\/www.mathematicus.it\/en\/amazon-store-index-mathematicus-game\/\"><span class=\"fusion-button-text awb-button__text awb-button__text--default\">Shop on Amazon stores worldwide<\/span><\/a><\/div><div class=\"fusion-separator fusion-full-width-sep\" style=\"align-self: center;margin-left: auto;margin-right: auto;margin-top:20px;width:100%;\"><\/div><div class=\"fusion-text fusion-text-15 fusion-no-medium-visibility fusion-no-large-visibility\"><p><img data-recalc-dims=\"1\" decoding=\"async\" class=\"lazyload alignnone wp-image-5090 size-full\" src=\"https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/06\/Amazon-Store-q-copia-e1749445552171.jpg?resize=480%2C260&#038;ssl=1\" data-orig-src=\"https:\/\/www.mathematicus.it\/wp-content\/uploads\/2025\/06\/Amazon-Store-q-copia-e1749445552171.jpg\" alt=\"\" width=\"480\" height=\"260\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27480%27%20height%3D%27260%27%20viewBox%3D%270%200%20480%20260%27%3E%3Crect%20width%3D%27480%27%20height%3D%27260%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-srcset=\"https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/06\/Amazon-Store-q-copia-e1749445552171.jpg?resize=200%2C108&amp;ssl=1 200w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/06\/Amazon-Store-q-copia-e1749445552171.jpg?resize=300%2C163&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/06\/Amazon-Store-q-copia-e1749445552171.jpg?resize=400%2C217&amp;ssl=1 400w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/06\/Amazon-Store-q-copia-e1749445552171.jpg?w=480&amp;ssl=1 480w\" data-sizes=\"auto\" data-orig-sizes=\"(max-width: 480px) 100vw, 480px\" \/><\/p>\n<\/div><div class=\"fusion-text fusion-text-16 fusion-no-small-visibility\"><p><img data-recalc-dims=\"1\" decoding=\"async\" class=\"lazyload alignnone wp-image-5070 size-full aligncenter\" src=\"https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/06\/Amazon-Store.png?resize=1200%2C37&#038;ssl=1\" data-orig-src=\"https:\/\/www.mathematicus.it\/wp-content\/uploads\/2025\/06\/Amazon-Store.png\" alt=\"\" width=\"1200\" height=\"37\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%271930%27%20height%3D%2760%27%20viewBox%3D%270%200%201930%2060%27%3E%3Crect%20width%3D%271930%27%20height%3D%2760%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-srcset=\"https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/06\/Amazon-Store.png?resize=200%2C6&amp;ssl=1 200w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/06\/Amazon-Store.png?resize=300%2C9&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/06\/Amazon-Store.png?resize=400%2C12&amp;ssl=1 400w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/06\/Amazon-Store.png?resize=500%2C16&amp;ssl=1 500w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/06\/Amazon-Store.png?resize=600%2C19&amp;ssl=1 600w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/06\/Amazon-Store.png?resize=700%2C22&amp;ssl=1 700w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/06\/Amazon-Store.png?resize=768%2C24&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/06\/Amazon-Store.png?resize=800%2C25&amp;ssl=1 800w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/06\/Amazon-Store.png?resize=1024%2C32&amp;ssl=1 1024w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/06\/Amazon-Store.png?resize=1200%2C37&amp;ssl=1 1200w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/06\/Amazon-Store.png?resize=1536%2C48&amp;ssl=1 1536w, https:\/\/i0.wp.com\/www.mathematicus.it\/wp-content\/uploads\/2025\/06\/Amazon-Store.png?w=1930&amp;ssl=1 1930w\" data-sizes=\"auto\" data-orig-sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/p>\n<\/div><\/div><\/div><\/div><\/div><\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":4303,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1445","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.5 (Yoast SEO v27.5) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Mathematicus - Mathematical games by Cesare Baj<\/title>\n<meta name=\"description\" content=\"Discover the world of mathematics with Mathematicus games. 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