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10 Great Fourth Grade Apps You Need Now

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The phrase "a window on the world" has never been truer than in this breathtaking astronomy app that lets budding astronauts wander through real-time views of the solar system, moons, stars, and more.

With the universe in the palm of their hands, little stargazers can pinch, zoom and tap their way around the galaxy; choose from Sky 2D or 3D, Infrared Sky, Radio Waves, X-Rays and more view options.