1.0AIM Research Centre/arcJenna Rice/arc/author/jennarice/rich600338<blockquote class="wp-embedded-content" data-secret="9zMtzY8h1Q"><a href="/arc/people/heather-douglas/">Heather Douglas</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="/arc/people/heather-douglas/embed/#?secret=9zMtzY8h1Q" width="600" height="338" title="“Heather Douglas” — AIM Research Centre" data-secret="9zMtzY8h1Q" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !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); //# sourceURL=/arc/wp-includes/js/wp-embed.min.js </script> /arc/wp-content/uploads/sites/85/2025/03/tempImagedQrtaY-scaled.jpg19202560Heather Douglas is an adjunct research professor and post doc in the department of Cognitive Science at ÐÓ°ÉÔ­´´ University. She came to research after a career teaching elementary school.  As an educator and cognitive scientist, she is interested in mathematical cognition and how children learn. Her research focuses on applying both quantitative and qualitative methods to […]