{"id":266,"date":"2022-04-25T00:11:29","date_gmt":"2022-04-24T19:11:29","guid":{"rendered":"https:\/\/rileymath.com\/?p=266"},"modified":"2022-08-24T02:01:37","modified_gmt":"2022-08-23T21:01:37","slug":"absolute-value","status":"publish","type":"post","link":"https:\/\/rileymath.com\/index.php\/2022\/04\/25\/absolute-value\/","title":{"rendered":"Absolute Value"},"content":{"rendered":"\n<p>The notation with two vertical bars to indicate Absolute Value was first introduced by Karl Weierstrass in 1841. I absolutely love that.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The notation with two vertical bars to indicate Absolute Value was first introduced by Karl Weierstrass in 1841. I absolutely love that.<\/p>\n","protected":false},"author":1,"featured_media":555,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","footnotes":""},"categories":[1],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Absolute Value - Riley Math Education<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/rileymath.com\/index.php\/2022\/04\/25\/absolute-value\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Absolute Value - Riley Math Education\" \/>\n<meta property=\"og:description\" content=\"The notation with two vertical bars to indicate Absolute Value was first introduced by Karl Weierstrass in 1841. I absolutely love that.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/rileymath.com\/index.php\/2022\/04\/25\/absolute-value\/\" \/>\n<meta property=\"og:site_name\" content=\"Riley Math Education\" \/>\n<meta property=\"article:published_time\" content=\"2022-04-24T19:11:29+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-08-23T21:01:37+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/rileymath.com\/wp-content\/uploads\/2022\/08\/IMG_1426.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"640\" \/>\n\t<meta property=\"og:image:height\" content=\"480\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"John Riley\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"John Riley\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/rileymath.com\/index.php\/2022\/04\/25\/absolute-value\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/rileymath.com\/index.php\/2022\/04\/25\/absolute-value\/\"},\"author\":{\"name\":\"John Riley\",\"@id\":\"https:\/\/rileymath.com\/#\/schema\/person\/32f762204d2be1d4f273a4b8136c1ddb\"},\"headline\":\"Absolute Value\",\"datePublished\":\"2022-04-24T19:11:29+00:00\",\"dateModified\":\"2022-08-23T21:01:37+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/rileymath.com\/index.php\/2022\/04\/25\/absolute-value\/\"},\"wordCount\":23,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/rileymath.com\/#\/schema\/person\/32f762204d2be1d4f273a4b8136c1ddb\"},\"image\":{\"@id\":\"https:\/\/rileymath.com\/index.php\/2022\/04\/25\/absolute-value\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/rileymath.com\/wp-content\/uploads\/2022\/08\/IMG_1426.jpg\",\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/rileymath.com\/index.php\/2022\/04\/25\/absolute-value\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/rileymath.com\/index.php\/2022\/04\/25\/absolute-value\/\",\"url\":\"https:\/\/rileymath.com\/index.php\/2022\/04\/25\/absolute-value\/\",\"name\":\"Absolute Value - Riley Math Education\",\"isPartOf\":{\"@id\":\"https:\/\/rileymath.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/rileymath.com\/index.php\/2022\/04\/25\/absolute-value\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/rileymath.com\/index.php\/2022\/04\/25\/absolute-value\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/rileymath.com\/wp-content\/uploads\/2022\/08\/IMG_1426.jpg\",\"datePublished\":\"2022-04-24T19:11:29+00:00\",\"dateModified\":\"2022-08-23T21:01:37+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/rileymath.com\/index.php\/2022\/04\/25\/absolute-value\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/rileymath.com\/index.php\/2022\/04\/25\/absolute-value\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/rileymath.com\/index.php\/2022\/04\/25\/absolute-value\/#primaryimage\",\"url\":\"https:\/\/rileymath.com\/wp-content\/uploads\/2022\/08\/IMG_1426.jpg\",\"contentUrl\":\"https:\/\/rileymath.com\/wp-content\/uploads\/2022\/08\/IMG_1426.jpg\",\"width\":640,\"height\":480},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/rileymath.com\/index.php\/2022\/04\/25\/absolute-value\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/rileymath.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Absolute Value\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/rileymath.com\/#website\",\"url\":\"https:\/\/rileymath.com\/\",\"name\":\"Riley Math Education\",\"description\":\"Teaching Teachers to Teach Mathematics\",\"publisher\":{\"@id\":\"https:\/\/rileymath.com\/#\/schema\/person\/32f762204d2be1d4f273a4b8136c1ddb\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/rileymath.com\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":[\"Person\",\"Organization\"],\"@id\":\"https:\/\/rileymath.com\/#\/schema\/person\/32f762204d2be1d4f273a4b8136c1ddb\",\"name\":\"John Riley\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/rileymath.com\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/rileymath.com\/wp-content\/uploads\/2022\/08\/cropped-RileyMathLogoNew-copy.png\",\"contentUrl\":\"https:\/\/rileymath.com\/wp-content\/uploads\/2022\/08\/cropped-RileyMathLogoNew-copy.png\",\"width\":512,\"height\":512,\"caption\":\"John Riley\"},\"logo\":{\"@id\":\"https:\/\/rileymath.com\/#\/schema\/person\/image\/\"},\"description\":\"I was born in Indianapolis, Indiana. After ten years as an officer in the United States Navy and eight additional years in management, I decided to become a teacher of mathematics, physics and earth science. About ten years into my teaching career, I discovered that I was an ineffective teacher. I did some research and found that most other teachers were also ineffective. I did more research and changed my traditional teaching style to modern methods where students worked on projects in class and were allowed to be creative and thoughtful. I was now a more effective teacher, but I still had more research to do and I continue pursuing better teaching methods to this day. After two years of project-based teaching, I began visiting classrooms throughout central Indiana on my prep periods to run activities and talk about brain science and math methods to teachers. Now with 18 years as a teacher and having taught every math subject from 6th grade through AP and IB math classes, I am leaving the classroom to become a full time trainer. I will visit as many classrooms as I can for the rest of my life to pass on what I have learned.\",\"sameAs\":[\"https:\/\/www.rileymath.com\"],\"url\":\"https:\/\/rileymath.com\/index.php\/author\/john\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Absolute Value - Riley Math Education","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:\/\/rileymath.com\/index.php\/2022\/04\/25\/absolute-value\/","og_locale":"en_US","og_type":"article","og_title":"Absolute Value - Riley Math Education","og_description":"The notation with two vertical bars to indicate Absolute Value was first introduced by Karl Weierstrass in 1841. I absolutely love that.","og_url":"https:\/\/rileymath.com\/index.php\/2022\/04\/25\/absolute-value\/","og_site_name":"Riley Math Education","article_published_time":"2022-04-24T19:11:29+00:00","article_modified_time":"2022-08-23T21:01:37+00:00","og_image":[{"width":640,"height":480,"url":"https:\/\/rileymath.com\/wp-content\/uploads\/2022\/08\/IMG_1426.jpg","type":"image\/jpeg"}],"author":"John Riley","twitter_card":"summary_large_image","twitter_misc":{"Written by":"John Riley","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/rileymath.com\/index.php\/2022\/04\/25\/absolute-value\/#article","isPartOf":{"@id":"https:\/\/rileymath.com\/index.php\/2022\/04\/25\/absolute-value\/"},"author":{"name":"John Riley","@id":"https:\/\/rileymath.com\/#\/schema\/person\/32f762204d2be1d4f273a4b8136c1ddb"},"headline":"Absolute Value","datePublished":"2022-04-24T19:11:29+00:00","dateModified":"2022-08-23T21:01:37+00:00","mainEntityOfPage":{"@id":"https:\/\/rileymath.com\/index.php\/2022\/04\/25\/absolute-value\/"},"wordCount":23,"commentCount":0,"publisher":{"@id":"https:\/\/rileymath.com\/#\/schema\/person\/32f762204d2be1d4f273a4b8136c1ddb"},"image":{"@id":"https:\/\/rileymath.com\/index.php\/2022\/04\/25\/absolute-value\/#primaryimage"},"thumbnailUrl":"https:\/\/rileymath.com\/wp-content\/uploads\/2022\/08\/IMG_1426.jpg","inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/rileymath.com\/index.php\/2022\/04\/25\/absolute-value\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/rileymath.com\/index.php\/2022\/04\/25\/absolute-value\/","url":"https:\/\/rileymath.com\/index.php\/2022\/04\/25\/absolute-value\/","name":"Absolute Value - Riley Math Education","isPartOf":{"@id":"https:\/\/rileymath.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/rileymath.com\/index.php\/2022\/04\/25\/absolute-value\/#primaryimage"},"image":{"@id":"https:\/\/rileymath.com\/index.php\/2022\/04\/25\/absolute-value\/#primaryimage"},"thumbnailUrl":"https:\/\/rileymath.com\/wp-content\/uploads\/2022\/08\/IMG_1426.jpg","datePublished":"2022-04-24T19:11:29+00:00","dateModified":"2022-08-23T21:01:37+00:00","breadcrumb":{"@id":"https:\/\/rileymath.com\/index.php\/2022\/04\/25\/absolute-value\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/rileymath.com\/index.php\/2022\/04\/25\/absolute-value\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/rileymath.com\/index.php\/2022\/04\/25\/absolute-value\/#primaryimage","url":"https:\/\/rileymath.com\/wp-content\/uploads\/2022\/08\/IMG_1426.jpg","contentUrl":"https:\/\/rileymath.com\/wp-content\/uploads\/2022\/08\/IMG_1426.jpg","width":640,"height":480},{"@type":"BreadcrumbList","@id":"https:\/\/rileymath.com\/index.php\/2022\/04\/25\/absolute-value\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/rileymath.com\/"},{"@type":"ListItem","position":2,"name":"Absolute Value"}]},{"@type":"WebSite","@id":"https:\/\/rileymath.com\/#website","url":"https:\/\/rileymath.com\/","name":"Riley Math Education","description":"Teaching Teachers to Teach Mathematics","publisher":{"@id":"https:\/\/rileymath.com\/#\/schema\/person\/32f762204d2be1d4f273a4b8136c1ddb"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/rileymath.com\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":["Person","Organization"],"@id":"https:\/\/rileymath.com\/#\/schema\/person\/32f762204d2be1d4f273a4b8136c1ddb","name":"John Riley","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/rileymath.com\/#\/schema\/person\/image\/","url":"https:\/\/rileymath.com\/wp-content\/uploads\/2022\/08\/cropped-RileyMathLogoNew-copy.png","contentUrl":"https:\/\/rileymath.com\/wp-content\/uploads\/2022\/08\/cropped-RileyMathLogoNew-copy.png","width":512,"height":512,"caption":"John Riley"},"logo":{"@id":"https:\/\/rileymath.com\/#\/schema\/person\/image\/"},"description":"I was born in Indianapolis, Indiana. After ten years as an officer in the United States Navy and eight additional years in management, I decided to become a teacher of mathematics, physics and earth science. About ten years into my teaching career, I discovered that I was an ineffective teacher. I did some research and found that most other teachers were also ineffective. I did more research and changed my traditional teaching style to modern methods where students worked on projects in class and were allowed to be creative and thoughtful. I was now a more effective teacher, but I still had more research to do and I continue pursuing better teaching methods to this day. After two years of project-based teaching, I began visiting classrooms throughout central Indiana on my prep periods to run activities and talk about brain science and math methods to teachers. Now with 18 years as a teacher and having taught every math subject from 6th grade through AP and IB math classes, I am leaving the classroom to become a full time trainer. I will visit as many classrooms as I can for the rest of my life to pass on what I have learned.","sameAs":["https:\/\/www.rileymath.com"],"url":"https:\/\/rileymath.com\/index.php\/author\/john\/"}]}},"uagb_featured_image_src":{"full":["https:\/\/rileymath.com\/wp-content\/uploads\/2022\/08\/IMG_1426.jpg",640,480,false],"thumbnail":["https:\/\/rileymath.com\/wp-content\/uploads\/2022\/08\/IMG_1426-150x150.jpg",150,150,true],"medium":["https:\/\/rileymath.com\/wp-content\/uploads\/2022\/08\/IMG_1426-300x225.jpg",300,225,true],"medium_large":["https:\/\/rileymath.com\/wp-content\/uploads\/2022\/08\/IMG_1426.jpg",640,480,false],"large":["https:\/\/rileymath.com\/wp-content\/uploads\/2022\/08\/IMG_1426.jpg",640,480,false],"1536x1536":["https:\/\/rileymath.com\/wp-content\/uploads\/2022\/08\/IMG_1426.jpg",640,480,false],"2048x2048":["https:\/\/rileymath.com\/wp-content\/uploads\/2022\/08\/IMG_1426.jpg",640,480,false]},"uagb_author_info":{"display_name":"John Riley","author_link":"https:\/\/rileymath.com\/index.php\/author\/john\/"},"uagb_comment_info":1,"uagb_excerpt":"The notation with two vertical bars to indicate Absolute Value was first introduced by Karl Weierstrass in 1841. I absolutely love that.","_links":{"self":[{"href":"https:\/\/rileymath.com\/index.php\/wp-json\/wp\/v2\/posts\/266"}],"collection":[{"href":"https:\/\/rileymath.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rileymath.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rileymath.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/rileymath.com\/index.php\/wp-json\/wp\/v2\/comments?post=266"}],"version-history":[{"count":1,"href":"https:\/\/rileymath.com\/index.php\/wp-json\/wp\/v2\/posts\/266\/revisions"}],"predecessor-version":[{"id":267,"href":"https:\/\/rileymath.com\/index.php\/wp-json\/wp\/v2\/posts\/266\/revisions\/267"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/rileymath.com\/index.php\/wp-json\/wp\/v2\/media\/555"}],"wp:attachment":[{"href":"https:\/\/rileymath.com\/index.php\/wp-json\/wp\/v2\/media?parent=266"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rileymath.com\/index.php\/wp-json\/wp\/v2\/categories?post=266"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rileymath.com\/index.php\/wp-json\/wp\/v2\/tags?post=266"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}