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Stellar smorgasbord of space and technology materials
Grades
3–8
Price
Free
Platforms
Web
Demonstrate, investigate, and laugh along with Science Bob
5–12
One-stop shop offers lots of links to helpful learning sites
2–12
First-person journey through pre-Revolutionary War America
6–8
Mac, Windows, Web, iPad
Popular sharing site potentially useful as a classroom photo resource
Free, Paid
Puzzle games touch lightly on physics, are mostly just for fun
Android, iPad, iPhone, iPod Touch, Kindle Fire
Globe-trekking flat friend goes digital on this very social app
2–6
iPad, iPhone, iPod Touch
Well-rounded, interactive history and presidential textbook
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
