1.0ClassInhttps://www.classin.comzhengyangcuihttps://www.classin.com/author/zhengyangcui/rich600338<blockquote class="wp-embedded-content" data-secret="krh3iT9Ton"><a href="https://www.classin.com/blog/professional-development-in-emerging-tech-of-tugboats-and-speedboats/">Professional Development in Emerging Tech: Of Tugboats and Speedboats</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.classin.com/blog/professional-development-in-emerging-tech-of-tugboats-and-speedboats/embed/#?secret=krh3iT9Ton" width="600" height="338" title="“Professional Development in Emerging Tech: Of Tugboats and Speedboats” — ClassIn" data-secret="krh3iT9Ton" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript"> /*! This file is auto-generated */ !function(c,d){"use strict";var e=!1,o=!1;if(d.querySelector)if(c.addEventListener)e=!0;if(c.wp=c.wp||{},c.wp.receiveEmbedMessage);else if(c.wp.receiveEmbedMessage=function(e){var t=e.data;if(!t);else if(!(t.secret||t.message||t.value));else if(/[^a-zA-Z0-9]/.test(t.secret));else{for(var r,s,a,i=d.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),n=d.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),o=new RegExp("^https?:$","i"),l=0;l<n.length;l++)n[l].style.display="none";for(l=0;l<i.length;l++)if(r=i[l],e.source!==r.contentWindow);else{if(r.removeAttribute("style"),"height"===t.message){if(1e3<(s=parseInt(t.value,10)))s=1e3;else if(~~s<200)s=200;r.height=s}if("link"===t.message)if(s=d.createElement("a"),a=d.createElement("a"),s.href=r.getAttribute("src"),a.href=t.value,!o.test(a.protocol));else if(a.host===s.host)if(d.activeElement===r)c.top.location.href=t.value}}},e)c.addEventListener("message",c.wp.receiveEmbedMessage,!1),d.addEventListener("DOMContentLoaded",t,!1),c.addEventListener("load",t,!1);function t(){if(o);else{o=!0;for(var e,t,r,s=-1!==navigator.appVersion.indexOf("MSIE 10"),a=!!navigator.userAgent.match(/Trident.*rv:11\./),i=d.querySelectorAll("iframe.wp-embedded-content"),n=0;n<i.length;n++){if(!(r=(t=i[n]).getAttribute("data-secret")))r=Math.random().toString(36).substr(2,10),t.src+="#?secret="+r,t.setAttribute("data-secret",r);if(s||a)(e=t.cloneNode(!0)).removeAttribute("security"),t.parentNode.replaceChild(e,t);t.contentWindow.postMessage({message:"ready",secret:r},"*")}}}}(window,document); </script> As educators who have spent the past six years working with teachers around the world on professional development (PD) programmes, we have observed why our current PD system doesn't work and identified three major steps to make improvements.https://static.wixstatic.com/media/a44654_5c092e3917bc4499b2393ea387edfc72~mv2.png/v1/fill/w_99,h_94,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/a44654_5c092e3917bc4499b2393ea387edfc72~mv2.png