1.0Teaching and Learning Services/tlscuthemeedtr5/tls/author/cuthemeedtr5/rich600338<blockquote class="wp-embedded-content" data-secret="2lmEIUqqhK"><a href="/tls/2016/blog-choosing-math-textbook-writing-one/">Blog: From choosing a math textbook to writing one</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="/tls/2016/blog-choosing-math-textbook-writing-one/embed/#?secret=2lmEIUqqhK" width="600" height="338" title="“Blog: From choosing a math textbook to writing one” — Teaching and Learning Services" data-secret="2lmEIUqqhK" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript"> /* <![CDATA[ */ /*! 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=/tls/wp-includes/js/wp-embed.min.js /* ]]> */ </script> By Kevin Cheung, Associate Professor, School of Mathematics and Statistics Some people regard math as a black-and-white subject. Such a sentiment has a certain degree of truth. Calculus two centuries ago is still calculus today. Theorems that have been rigorously established will not become untrue in the future unless our logical foundations crumble. Yet there […]