[raphaelrk]

Might I recommend processing.js? It's got a very shallow learning curve even to first-time programmers, there's plenty of support for it, it requires little setup, and lets you create visual applications immediately. If you use https://www.khanacademy.org/computing/cs, KhanAcademy's processing.js curriculum/editor, you'll have no setup, documentation, and lots of examples to look off of. I've been using it for a while now and suggest it to most first-time programmers because of how easy it makes it to get into programming and start building things immediately. Not that a big name necessarily means anything, but John Resig, creator of jQuery, created processing.js and is an employee of KhanAcademy, writing their editor.

[ahsanhilal]

Great pick! I Will definitely loo into it. Thanks for the rec!

[bayonetz]

I'll second that. I am teaching a workshop to 10 year olds in Processing and it is working out well so far.