Flocabulary: Educational Hip-Hop for K-12 (Free to try)
Recommended age: 6 and older
Catchy hip-hop songs and fun videos for memorable learning
Devices: iPhone, iPod Touch, iPad, Android
World Atlas HD ($1.99)
Recommended age: 8 and older
This fab tool provides the world at your fingertips.
Device: iPad
Arloon Geometry ($2.99)
Recommended age: 10 and older
Shape up spatial skills with this augmented reality tool.
Devices: iPhone, iPod Touch, iPad, Windows Phone
How Stuff Works (Free)
Recommended age: 12 and older
Popular, trusted resource covers mature topics responsibly
Devices: iPhone, iPod Touch, iPad, Andriod, Apps for Windows, Windows Phone
Yup — Homework Help With Math and Chemistry Tutors (Free trial, then subscription-based)
Recommended age: 13 and older
Live tutors help tweens and teens with math and science.
Devices: iPhone, iPod Touch, iPad, Android
