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Grade 4
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Space
Ask Jimmy and the Bug
Tidal Power—It's Out of This World
Sailing to the Stars
Science Scoops: Pluto: A Planet or Not?
Exploring Space
Blasting into Space
Which star is the only one that doesn't appear to change its position in the sky?
Try these simulations too:
How fast does a stalactite grow?
What caused the Statue of Liberty to change color over time?
How old can coral reefs be?
