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Popular sharing site potentially useful as a classroom photo resource
Grades
5–12
Price
Free, Paid
Platforms
Web
Puzzle games touch lightly on physics, are mostly just for fun
3–8
Android, iPad, iPhone, iPod Touch, Kindle Fire
Globe-trekking flat friend goes digital on this very social app
2–6
Free
iPad, iPhone, iPod Touch
Well-rounded, interactive history and presidential textbook
6–8
Paid
iPad
Aliens make presidential facts out-of-this-world fun
Drill math skills with basic, customizable chalkboard-style app
K–8
Dazzling look at the world via an interactive atlas
5–8
