{"version":"1.0","provider_name":"Entelechy","provider_url":"https:\/\/entelechy.app","title":"Using and Abacus to Do Addition and Subtraction - Entelechy","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"2dGVSB8wMW\"><a href=\"https:\/\/entelechy.app\/using-and-abacus-to-do-addition-and-subtraction\/\">Using and Abacus to Do Addition and Subtraction<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/entelechy.app\/using-and-abacus-to-do-addition-and-subtraction\/embed\/#?secret=2dGVSB8wMW\" width=\"600\" height=\"338\" title=\"&#8220;Using and Abacus to Do Addition and Subtraction&#8221; &#8212; Entelechy\" data-secret=\"2dGVSB8wMW\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n<\/script>\n","thumbnail_url":"https:\/\/entelechy.app\/wp-content\/uploads\/2016\/02\/math-1547018_960_720.jpg","thumbnail_width":960,"thumbnail_height":490,"description":"Learn what an abacus is and how to do abacus addition and subtraction. You&#8217;ll find information on using the different kinds of Abacus, and suggested resources. What is an abacus? An abacus is a Maths tool that uses lines of beads to represent numbers. By moving the beads, you can work out and show different amounts. It&#8217;s a visual and tactile method, were seeing and\/or feeling the beads will tell you the answer. This means that abacuses are particularly useful for blind and partially sighted people and are great for teaching people with different learning styles. An abacus is sometimes &hellip; Continue reading \"\""}