It's still a work in progress so it's not yet published, but it will be by the end of the year! Thanks for asking! Until then you can print the PDF for free or play online: http://coloring-book.co/book.pdf

Are you the author? This is a great idea - I've been thinking about doing this with graph theory.

Here's an example:

https://plus.google.com/+AlexKudlick/posts/MWNRWTRATgA

I've been building tools lately; for now, a graph editor.

Hit me up if you're interested in talking about tools for creating this sort of content, I'd be interested to know more about your approach.

My email is in my profile.

My kids enjoyed this: http://jdh.hamkins.org/math-for-eight-year-olds/

Great! Let's chat. [email protected]

It would be nice if there were a color pallet and a fill tool, so you could color in the digital version, then watch the animations with the colors.

HN should really tag some posts with (WIP).

Which would be the most HN tag ever.

link suffocated? Github has the code but no pdf? https://github.com/aberke/coloring-book?files=1

edit: btw, raphael.js looks good, I wanted to animate trees for a long time.