The environment used to teach programming on Khan Academy looks very much like this, but in the browser and based on JavaScript and Processing.JS:<p>Screenshot: <a href="http:&#x2F;&#x2F;i.imgur.com&#x2F;FKX3j2P.png" rel="nofollow">http:&#x2F;&#x2F;i.imgur.com&#x2F;FKX3j2P.png</a><p>Source: <a href="https:&#x2F;&#x2F;www.khanacademy.org&#x2F;computing&#x2F;computer-programming&#x2F;programming&#x2F;animation-basics&#x2F;p&#x2F;challenge-parting-clouds" rel="nofollow">https:&#x2F;&#x2F;www.khanacademy.org&#x2F;computing&#x2F;computer-programming&#x2F;p...</a>