{"id":18462,"date":"2025-08-29T09:31:28","date_gmt":"2025-08-29T08:31:28","guid":{"rendered":"https:\/\/www.mathsweek.ie\/2024\/?p=18462"},"modified":"2026-01-13T15:44:34","modified_gmt":"2026-01-13T15:44:34","slug":"caeser-cipher","status":"publish","type":"post","link":"https:\/\/www.mathsweek.ie\/2025\/caeser-cipher\/","title":{"rendered":"Caeser Cipher"},"content":{"rendered":"<div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"background-color: rgba(255,255,255,0);background-position: center center;background-repeat: no-repeat;border-width: 0px 0px 0px 0px;border-color:#eaeaea;border-style:solid;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start\" style=\"max-width:1289.6px;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_2_3 2_3 fusion-flex-column\"><div class=\"fusion-column-wrapper fusion-flex-justify-content-flex-start fusion-content-layout-column\" style=\"background-position:left top;background-repeat:no-repeat;-webkit-background-size:cover;-moz-background-size:cover;-o-background-size:cover;background-size:cover;padding: 0px 0px 0px 0px;\"><style type=\"text\/css\">@media only screen and (max-width:1024px) {.fusion-title.fusion-title-1{margin-top:0%!important; margin-right:0px!important;margin-bottom:30px!important;margin-left:0px!important;}}@media only screen and (max-width:640px) {.fusion-title.fusion-title-1{margin-top:0px!important; margin-right:0px!important;margin-bottom:20px!important; margin-left:0px!important;}}<\/style><div class=\"fusion-title title fusion-title-1 fusion-title-text fusion-title-size-one\" style=\"margin-top:0%;margin-right:0px;margin-bottom:30px;margin-left:0px;\"><div class=\"title-sep-container title-sep-container-left fusion-no-large-visibility fusion-no-medium-visibility fusion-no-small-visibility\"><div class=\"title-sep sep-single sep-solid\" style=\"border-color:#eaeaea;\"><\/div><\/div><h1 class=\"title-heading-left fusion-responsive-typography-calculated\" style=\"margin:0;--fontSize:50;line-height:1.2;\">Caesar Cipher<\/h1><div class=\"title-sep-container title-sep-container-right\"><div class=\"title-sep sep-single sep-solid\" style=\"border-color:#eaeaea;\"><\/div><\/div><\/div><div class=\"fusion-text fusion-text-1\"><p>The Caesar Cipher has a long history of usage, dating back to Julius Ceasar (100BC-44 BC). The cipher works by substituting for each letter the letter that is n letters further along the alphabet, where n is the key.<\/p>\n<p><strong>Skill<\/strong>: pattern and sequence, problem solving skill<\/p>\n<p><strong>Resources<\/strong>: Caesar Cipher template and worksheet (see below)<\/p>\n<p><strong>Activity<\/strong>: Give each student a copy of Caesar Cipher template, they need to cut it out, and fasten the two wheels together e.g. using a paper clip. Two extra wheels, at the bottom of the page, are for pupils to encode using numbers and also to create their own code.<\/p>\n<p>As an introduction, you can begin with writing on the board: \u201cToday we will be encoding secret messages\u201d but backwards (similar to Leonardo Da Vinci\u2019s but not mirror backwards). Ask your students to decipher that sentence and chat about other cipher methods that students may be familiar with.<\/p>\n<\/div><\/div><style type=\"text\/css\">.fusion-body .fusion-builder-column-0{width:66.666666666667% !important;margin-top : 0px;margin-bottom : 20px;}.fusion-builder-column-0 > .fusion-column-wrapper {padding-top : 0px !important;padding-right : 0px !important;margin-right : 2.88%;padding-bottom : 0px !important;padding-left : 0px !important;margin-left : 2.88%;}@media only screen and (max-width:1024px) {.fusion-body .fusion-builder-column-0{width:100% !important;order : 0;}.fusion-builder-column-0 > .fusion-column-wrapper {margin-right : 1.92%;margin-left : 1.92%;}}@media only screen and (max-width:640px) {.fusion-body .fusion-builder-column-0{width:100% !important;order : 0;}.fusion-builder-column-0 > .fusion-column-wrapper {margin-right : 1.92%;margin-left : 1.92%;}}<\/style><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-1 fusion_builder_column_1_3 1_3 fusion-flex-column\"><div class=\"fusion-column-wrapper fusion-flex-justify-content-flex-start fusion-content-layout-column\" style=\"background-position:left top;background-repeat:no-repeat;-webkit-background-size:cover;-moz-background-size:cover;-o-background-size:cover;background-size:cover;padding: 0px 0px 0px 0px;\"><div ><span class=\" fusion-imageframe imageframe-none imageframe-1 hover-type-none\"><img decoding=\"async\" width=\"800\" height=\"337\" title=\"ceaser cipher\" src=\"https:\/\/www.mathsweek.ie\/2025\/wp-content\/uploads\/2024\/08\/ceaser-cipher.webp\" class=\"img-responsive wp-image-18438\" srcset=\"https:\/\/www.mathsweek.ie\/2025\/wp-content\/uploads\/2024\/08\/ceaser-cipher-200x84.webp 200w, https:\/\/www.mathsweek.ie\/2025\/wp-content\/uploads\/2024\/08\/ceaser-cipher-300x126.webp 300w, https:\/\/www.mathsweek.ie\/2025\/wp-content\/uploads\/2024\/08\/ceaser-cipher-400x169.webp 400w, https:\/\/www.mathsweek.ie\/2025\/wp-content\/uploads\/2024\/08\/ceaser-cipher-500x211.webp 500w, https:\/\/www.mathsweek.ie\/2025\/wp-content\/uploads\/2024\/08\/ceaser-cipher-600x253.webp 600w, https:\/\/www.mathsweek.ie\/2025\/wp-content\/uploads\/2024\/08\/ceaser-cipher-768x324.webp 768w, https:\/\/www.mathsweek.ie\/2025\/wp-content\/uploads\/2024\/08\/ceaser-cipher.webp 800w\" sizes=\"(max-width: 1024px) 100vw, (max-width: 640px) 100vw, 400px\" \/><\/span><\/div><\/div><style type=\"text\/css\">.fusion-body .fusion-builder-column-1{width:33.333333333333% !important;margin-top : 0px;margin-bottom : 20px;}.fusion-builder-column-1 > .fusion-column-wrapper {padding-top : 0px !important;padding-right : 0px !important;margin-right : 5.76%;padding-bottom : 0px !important;padding-left : 0px !important;margin-left : 5.76%;}@media only screen and (max-width:1024px) {.fusion-body .fusion-builder-column-1{width:100% !important;order : 0;}.fusion-builder-column-1 > .fusion-column-wrapper {margin-right : 1.92%;margin-left : 1.92%;}}@media only screen and (max-width:640px) {.fusion-body .fusion-builder-column-1{width:100% !important;order : 0;}.fusion-builder-column-1 > .fusion-column-wrapper {margin-right : 1.92%;margin-left : 1.92%;}}<\/style><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-2 fusion_builder_column_1_1 1_1 fusion-flex-column\"><div class=\"fusion-column-wrapper fusion-flex-justify-content-flex-start fusion-content-layout-column\" style=\"background-position:left top;background-repeat:no-repeat;-webkit-background-size:cover;-moz-background-size:cover;-o-background-size:cover;background-size:cover;padding: 0px 0px 0px 0px;\"><div ><a class=\"fusion-button button-flat fusion-button-default-size button-orange button-1 fusion-button-default-span fusion-button-default-type\" target=\"_self\" href=\"https:\/\/www.mathsweek.ie\/2023\/wp-content\/uploads\/2018\/07\/Caesar-Cipher.pdf\"><span class=\"fusion-button-text\">Click here for the Activity<\/span><\/a><\/div><\/div><style type=\"text\/css\">.fusion-body .fusion-builder-column-2{width:100% !important;margin-top : 0px;margin-bottom : 20px;}.fusion-builder-column-2 > .fusion-column-wrapper {padding-top : 0px !important;padding-right : 0px !important;margin-right : 1.92%;padding-bottom : 0px !important;padding-left : 0px !important;margin-left : 1.92%;}@media only screen and (max-width:1024px) {.fusion-body .fusion-builder-column-2{width:100% !important;order : 0;}.fusion-builder-column-2 > .fusion-column-wrapper {margin-right : 1.92%;margin-left : 1.92%;}}@media only screen and (max-width:640px) {.fusion-body .fusion-builder-column-2{width:100% !important;order : 0;}.fusion-builder-column-2 > .fusion-column-wrapper {margin-right : 1.92%;margin-left : 1.92%;}}<\/style><\/div><\/div><style type=\"text\/css\">.fusion-body .fusion-flex-container.fusion-builder-row-1{ padding-top : 0px;margin-top : 0px;padding-right : 0px;padding-bottom : 0px;margin-bottom : 0px;padding-left : 0px;}<\/style><\/div>\n","protected":false},"excerpt":{"rendered":"<p>The Caesar Cipher has a long history of usage, dating back to Julius Ceasar (100BC-44 BC). The cipher works by substituting for each letter the letter that is n letters further along the alphabet, where n is the key.<\/p>\n","protected":false},"author":1,"featured_media":18438,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_vp_format_video_url":"","_vp_image_focal_point":[],"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[261,44],"tags":[],"class_list":["post-18462","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-primary","category-resources"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Caeser Cipher &#8211; MATHS WEEK IRELAND<\/title>\n<meta name=\"description\" content=\"Maths Week will take place from 11 - 29 Oct. 2025. We will have events and activities for all the family. Visit MathsWeek.ie for more info MATHS WEEK IRELAND\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.mathsweek.ie\/2025\/caeser-cipher\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Caeser Cipher &#8211; MATHS WEEK IRELAND\" \/>\n<meta property=\"og:description\" content=\"Maths Week will take place from 11 - 29 Oct. 2025. We will have events and activities for all the family. Visit MathsWeek.ie for more info MATHS WEEK IRELAND\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.mathsweek.ie\/2025\/caeser-cipher\/\" \/>\n<meta property=\"og:site_name\" content=\"MATHS WEEK IRELAND\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/MathsWeek\" \/>\n<meta property=\"article:published_time\" content=\"2025-08-29T08:31:28+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-01-13T15:44:34+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.mathsweek.ie\/2025\/wp-content\/uploads\/2024\/08\/ceaser-cipher.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"800\" \/>\n\t<meta property=\"og:image:height\" content=\"337\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@mathsweek\" \/>\n<meta name=\"twitter:site\" content=\"@mathsweek\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"8 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.mathsweek.ie\\\/2025\\\/caeser-cipher\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.mathsweek.ie\\\/2025\\\/caeser-cipher\\\/\"},\"author\":{\"name\":\"admin\",\"@id\":\"https:\\\/\\\/www.mathsweek.ie\\\/2025\\\/#\\\/schema\\\/person\\\/6fb912ca59eba98cfd68655a82d74b2b\"},\"headline\":\"Caeser Cipher\",\"datePublished\":\"2025-08-29T08:31:28+00:00\",\"dateModified\":\"2026-01-13T15:44:34+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.mathsweek.ie\\\/2025\\\/caeser-cipher\\\/\"},\"wordCount\":1581,\"publisher\":{\"@id\":\"https:\\\/\\\/www.mathsweek.ie\\\/2025\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.mathsweek.ie\\\/2025\\\/caeser-cipher\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.mathsweek.ie\\\/2025\\\/wp-content\\\/uploads\\\/2024\\\/08\\\/ceaser-cipher.webp\",\"articleSection\":[\"Primary\",\"Resources\"],\"inLanguage\":\"en-GB\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.mathsweek.ie\\\/2025\\\/caeser-cipher\\\/\",\"url\":\"https:\\\/\\\/www.mathsweek.ie\\\/2025\\\/caeser-cipher\\\/\",\"name\":\"Caeser Cipher &#8211; MATHS WEEK IRELAND\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.mathsweek.ie\\\/2025\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.mathsweek.ie\\\/2025\\\/caeser-cipher\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.mathsweek.ie\\\/2025\\\/caeser-cipher\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.mathsweek.ie\\\/2025\\\/wp-content\\\/uploads\\\/2024\\\/08\\\/ceaser-cipher.webp\",\"datePublished\":\"2025-08-29T08:31:28+00:00\",\"dateModified\":\"2026-01-13T15:44:34+00:00\",\"description\":\"Maths Week will take place from 11 - 29 Oct. 2025. We will have events and activities for all the family. Visit MathsWeek.ie for more info MATHS WEEK IRELAND\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.mathsweek.ie\\\/2025\\\/caeser-cipher\\\/#breadcrumb\"},\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.mathsweek.ie\\\/2025\\\/caeser-cipher\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\\\/\\\/www.mathsweek.ie\\\/2025\\\/caeser-cipher\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.mathsweek.ie\\\/2025\\\/wp-content\\\/uploads\\\/2024\\\/08\\\/ceaser-cipher.webp\",\"contentUrl\":\"https:\\\/\\\/www.mathsweek.ie\\\/2025\\\/wp-content\\\/uploads\\\/2024\\\/08\\\/ceaser-cipher.webp\",\"width\":800,\"height\":337},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.mathsweek.ie\\\/2025\\\/caeser-cipher\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.mathsweek.ie\\\/2025\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Caeser Cipher\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.mathsweek.ie\\\/2025\\\/#website\",\"url\":\"https:\\\/\\\/www.mathsweek.ie\\\/2025\\\/\",\"name\":\"MATHS WEEK IRELAND\",\"description\":\"Maths for All\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.mathsweek.ie\\\/2025\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.mathsweek.ie\\\/2025\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-GB\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.mathsweek.ie\\\/2025\\\/#organization\",\"name\":\"Maths Week Ireland\",\"url\":\"https:\\\/\\\/www.mathsweek.ie\\\/2025\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\\\/\\\/www.mathsweek.ie\\\/2025\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.mathsweek.ie\\\/2025\\\/wp-content\\\/uploads\\\/2018\\\/03\\\/MW-logo-cropped-e1521418465216.png\",\"contentUrl\":\"https:\\\/\\\/www.mathsweek.ie\\\/2025\\\/wp-content\\\/uploads\\\/2018\\\/03\\\/MW-logo-cropped-e1521418465216.png\",\"width\":20,\"height\":20,\"caption\":\"Maths Week Ireland\"},\"image\":{\"@id\":\"https:\\\/\\\/www.mathsweek.ie\\\/2025\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/MathsWeek\",\"https:\\\/\\\/x.com\\\/mathsweek\",\"https:\\\/\\\/www.instagram.com\\\/mathsireland\\\/\",\"https:\\\/\\\/www.linkedin.com\\\/company\\\/maths-week-ireland\\\/\",\"https:\\\/\\\/www.youtube.com\\\/channel\\\/UCNWgrcdn2mGzKqhXJDI_-Pg?disable_polymer=true\"]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.mathsweek.ie\\\/2025\\\/#\\\/schema\\\/person\\\/6fb912ca59eba98cfd68655a82d74b2b\",\"name\":\"admin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/6564d4822bdc8d1b7db4a4902b5622f49c5af0e563b3b4eb1502f9a3b1536068?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/6564d4822bdc8d1b7db4a4902b5622f49c5af0e563b3b4eb1502f9a3b1536068?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/6564d4822bdc8d1b7db4a4902b5622f49c5af0e563b3b4eb1502f9a3b1536068?s=96&d=mm&r=g\",\"caption\":\"admin\"},\"url\":\"https:\\\/\\\/www.mathsweek.ie\\\/2025\\\/author\\\/admin\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Caeser Cipher &#8211; MATHS WEEK IRELAND","description":"Maths Week will take place from 11 - 29 Oct. 2025. We will have events and activities for all the family. Visit MathsWeek.ie for more info MATHS WEEK IRELAND","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.mathsweek.ie\/2025\/caeser-cipher\/","og_locale":"en_GB","og_type":"article","og_title":"Caeser Cipher &#8211; MATHS WEEK IRELAND","og_description":"Maths Week will take place from 11 - 29 Oct. 2025. We will have events and activities for all the family. Visit MathsWeek.ie for more info MATHS WEEK IRELAND","og_url":"https:\/\/www.mathsweek.ie\/2025\/caeser-cipher\/","og_site_name":"MATHS WEEK IRELAND","article_publisher":"https:\/\/www.facebook.com\/MathsWeek","article_published_time":"2025-08-29T08:31:28+00:00","article_modified_time":"2026-01-13T15:44:34+00:00","og_image":[{"width":800,"height":337,"url":"https:\/\/www.mathsweek.ie\/2025\/wp-content\/uploads\/2024\/08\/ceaser-cipher.webp","type":"image\/webp"}],"author":"admin","twitter_card":"summary_large_image","twitter_creator":"@mathsweek","twitter_site":"@mathsweek","twitter_misc":{"Written by":false,"Est. reading time":"8 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.mathsweek.ie\/2025\/caeser-cipher\/#article","isPartOf":{"@id":"https:\/\/www.mathsweek.ie\/2025\/caeser-cipher\/"},"author":{"name":"admin","@id":"https:\/\/www.mathsweek.ie\/2025\/#\/schema\/person\/6fb912ca59eba98cfd68655a82d74b2b"},"headline":"Caeser Cipher","datePublished":"2025-08-29T08:31:28+00:00","dateModified":"2026-01-13T15:44:34+00:00","mainEntityOfPage":{"@id":"https:\/\/www.mathsweek.ie\/2025\/caeser-cipher\/"},"wordCount":1581,"publisher":{"@id":"https:\/\/www.mathsweek.ie\/2025\/#organization"},"image":{"@id":"https:\/\/www.mathsweek.ie\/2025\/caeser-cipher\/#primaryimage"},"thumbnailUrl":"https:\/\/www.mathsweek.ie\/2025\/wp-content\/uploads\/2024\/08\/ceaser-cipher.webp","articleSection":["Primary","Resources"],"inLanguage":"en-GB"},{"@type":"WebPage","@id":"https:\/\/www.mathsweek.ie\/2025\/caeser-cipher\/","url":"https:\/\/www.mathsweek.ie\/2025\/caeser-cipher\/","name":"Caeser Cipher &#8211; MATHS WEEK IRELAND","isPartOf":{"@id":"https:\/\/www.mathsweek.ie\/2025\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.mathsweek.ie\/2025\/caeser-cipher\/#primaryimage"},"image":{"@id":"https:\/\/www.mathsweek.ie\/2025\/caeser-cipher\/#primaryimage"},"thumbnailUrl":"https:\/\/www.mathsweek.ie\/2025\/wp-content\/uploads\/2024\/08\/ceaser-cipher.webp","datePublished":"2025-08-29T08:31:28+00:00","dateModified":"2026-01-13T15:44:34+00:00","description":"Maths Week will take place from 11 - 29 Oct. 2025. We will have events and activities for all the family. Visit MathsWeek.ie for more info MATHS WEEK IRELAND","breadcrumb":{"@id":"https:\/\/www.mathsweek.ie\/2025\/caeser-cipher\/#breadcrumb"},"inLanguage":"en-GB","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.mathsweek.ie\/2025\/caeser-cipher\/"]}]},{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/www.mathsweek.ie\/2025\/caeser-cipher\/#primaryimage","url":"https:\/\/www.mathsweek.ie\/2025\/wp-content\/uploads\/2024\/08\/ceaser-cipher.webp","contentUrl":"https:\/\/www.mathsweek.ie\/2025\/wp-content\/uploads\/2024\/08\/ceaser-cipher.webp","width":800,"height":337},{"@type":"BreadcrumbList","@id":"https:\/\/www.mathsweek.ie\/2025\/caeser-cipher\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.mathsweek.ie\/2025\/"},{"@type":"ListItem","position":2,"name":"Caeser Cipher"}]},{"@type":"WebSite","@id":"https:\/\/www.mathsweek.ie\/2025\/#website","url":"https:\/\/www.mathsweek.ie\/2025\/","name":"MATHS WEEK IRELAND","description":"Maths for All","publisher":{"@id":"https:\/\/www.mathsweek.ie\/2025\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.mathsweek.ie\/2025\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-GB"},{"@type":"Organization","@id":"https:\/\/www.mathsweek.ie\/2025\/#organization","name":"Maths Week Ireland","url":"https:\/\/www.mathsweek.ie\/2025\/","logo":{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/www.mathsweek.ie\/2025\/#\/schema\/logo\/image\/","url":"https:\/\/www.mathsweek.ie\/2025\/wp-content\/uploads\/2018\/03\/MW-logo-cropped-e1521418465216.png","contentUrl":"https:\/\/www.mathsweek.ie\/2025\/wp-content\/uploads\/2018\/03\/MW-logo-cropped-e1521418465216.png","width":20,"height":20,"caption":"Maths Week Ireland"},"image":{"@id":"https:\/\/www.mathsweek.ie\/2025\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/MathsWeek","https:\/\/x.com\/mathsweek","https:\/\/www.instagram.com\/mathsireland\/","https:\/\/www.linkedin.com\/company\/maths-week-ireland\/","https:\/\/www.youtube.com\/channel\/UCNWgrcdn2mGzKqhXJDI_-Pg?disable_polymer=true"]},{"@type":"Person","@id":"https:\/\/www.mathsweek.ie\/2025\/#\/schema\/person\/6fb912ca59eba98cfd68655a82d74b2b","name":"admin","image":{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/secure.gravatar.com\/avatar\/6564d4822bdc8d1b7db4a4902b5622f49c5af0e563b3b4eb1502f9a3b1536068?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/6564d4822bdc8d1b7db4a4902b5622f49c5af0e563b3b4eb1502f9a3b1536068?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/6564d4822bdc8d1b7db4a4902b5622f49c5af0e563b3b4eb1502f9a3b1536068?s=96&d=mm&r=g","caption":"admin"},"url":"https:\/\/www.mathsweek.ie\/2025\/author\/admin\/"}]}},"jetpack_featured_media_url":"https:\/\/www.mathsweek.ie\/2025\/wp-content\/uploads\/2024\/08\/ceaser-cipher.webp","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.mathsweek.ie\/2025\/wp-json\/wp\/v2\/posts\/18462","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.mathsweek.ie\/2025\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.mathsweek.ie\/2025\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.mathsweek.ie\/2025\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.mathsweek.ie\/2025\/wp-json\/wp\/v2\/comments?post=18462"}],"version-history":[{"count":5,"href":"https:\/\/www.mathsweek.ie\/2025\/wp-json\/wp\/v2\/posts\/18462\/revisions"}],"predecessor-version":[{"id":22191,"href":"https:\/\/www.mathsweek.ie\/2025\/wp-json\/wp\/v2\/posts\/18462\/revisions\/22191"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.mathsweek.ie\/2025\/wp-json\/wp\/v2\/media\/18438"}],"wp:attachment":[{"href":"https:\/\/www.mathsweek.ie\/2025\/wp-json\/wp\/v2\/media?parent=18462"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.mathsweek.ie\/2025\/wp-json\/wp\/v2\/categories?post=18462"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.mathsweek.ie\/2025\/wp-json\/wp\/v2\/tags?post=18462"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}