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CodeRunner is a Mac app that lets you:

Edit and run code in AppleScript, C, C++, Java, JavaScript (Node.js), Objective-C, Perl, PHP, Python, Ruby, Shell or any other language you might have installed on your system.

This could be really useful for programming teachers — one of the big headaches we always have in the first lesson was making sure things were set up properly. There was a time we tried teaching C++, and found out that the computers’ permission settings disallowed running of any shell programs, so we sang songs and dreamed of correcting missing semi-colons. Ah, fun times.

Zach Holman, who has to keep reminding us in this post that he’s not a designer, offers some valuable and instantly usable tips on slide design. The concluding para, for the TL;DR crowd:

I’m certainly not a designer, but it’s really remarkable how little design you need to put yourself far ahead of most talks. Huge text. Consistent colors. Less words. Worry about those, and it will already put you far ahead of the pack.

Take a look at his building GitHub with GitHub slides for an example.

An intro to Adobe’s CSS shaders proposal. Fascinating stuff, encapsulated in this sentence:

With CSS shaders, you can turn your HTML or SVG element into a vertex mesh.

Take a look at the videos for the possibilities (also, possible abuse).

This plugin allows you to get a QuickLook preview for all .mobileprovision files. It gives you the name of the profile, its creation and expiration date, its App ID, and a sorted list of all the UDIDs included.

Yay!

A follow-up to the post by that educational technology startup dude. A nice summary of lessons he’s learned in the discussions since his post.

Very, very useful. (Look carefully at the source, though.)

Learn some kerning with a HTML5 game.

Educational. Also, major LOLs:

They’re deadly serious about it, too: