LightBot

Great way to learn the mechanics of programmings

in browser- lite version (free)

http://light-bot.com/flash-lite.html



Apple app in app store $2.99
https://itunes.apple.com/us/app/lightbot-jr-4+-coding-puzzles/id858640629

android app in app store $2.99
https://play.google.com/store/apps/details?id=com.lightbot.lightbot