13 Apps for Kid Scientists

Kids ages 9–11 can get their fingers on over 65 moving parts to invent their own wacky machine and see it in action with Monster Physics. Not only does the app let young engineers’ imaginations loose, it also provides 50 missions that get them building with a specific goal in mind. Learning physics concepts and terms has never been this much fun.

$1.99; recommended for ages 9–11; available on iPhone/iPad.