Talk: Khan Academy Computer Science

This past weekend I gave a talk at EmpireJS on the Computer Science platform that I’ve been developing at Khan Academy. The talk explores that platform and then goes into deeper technical details about how the real-time execution on the site was achieved. I recorded the talk on my laptop (so please excuse the echo […]

3 Comments · Posted: October 26th, 2012

Redefining the Introduction to Computer Science

I’m incredibly excited to take this opportunity to announce a new project that I’ve been leading here at Khan Academy: Khan Academy Computer Science. We’re releasing a completely new platform that targets people with no programming knowledge and gives them an engaging and fun environment to learn in. Over everything else we wanted to emphasize […]

56 Comments · Posted: August 14th, 2012

Secret Omens: Book Update

Jeff Atwood wrote up a post today on the merits of writing a technical book in this day-and-age and specifically called out my past post on programming book profits and my work-in-progress Secrets of the JavaScript Ninja. I wanted to give a brief status update on the book and how it’s going. I started the […]

37 Comments · Posted: July 11th, 2012

Image Similarity Search Wanted

I’ve been working on a few projects in my spare time and one service, in particular, would greatly benefit from a high quality image similarity search. I’ve been trying a number of the Open (and non-Open) Source tools (a great list of which is on Wikipedia here). Thus far none of the tools that I’ve […]

38 Comments · Posted: February 13th, 2012

JavaScript as a First Language

At Khan Academy we’ve been investigating teaching Computer Science to students in some new and interesting ways. The most interesting aspect of which is that we’re likely going to be teaching them JavaScript as their first language. We’re in a very unique position as we’re primarily aiming to teach students who’ve been through our previous […]

83 Comments · Posted: December 21st, 2011

Khan Exercise Rewrite

Today we’re pushing live a complete rewrite of the Khan Academy Exercise framework (live demo). A big push at Khan Academy has been to write more-and-more exercises for students to practice with. Naturally, to increase the number of exercises that we have, we needed to make it easier for team members, and casual committers, to […]

23 Comments · Posted: July 28th, 2011

Random Khan Exercises

We’re taking an innovative new approach to providing students with exercises in the new Khan Academy exercise framework (which will be released for beta testing soon). In the old framework a problem would be randomly generated and provided to the user. This would result in a near-infinite number of randomly generated problems. This ends up […]

8 Comments · Posted: July 19th, 2011

jQuery 1.6 and .attr()

jQuery 1.6 and 1.6.1 are out the door. Congrats to the team and everyone that was involved with the release! A relatively controversial change in 1.6 was regarding how attributes and DOM object properties were handled. In 1.6 we wanted to take the major step of completely separating the two, allowing us to create an […]

41 Comments · Posted: May 13th, 2011

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