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3-5 Science
Explorer (Ages 8-12)
Waves — Light and Sound
Light and sound are both WAVES — but very different ones. Learn how they travel, why light is faster than sound, and experiments that let you SEE both kinds of waves.
15 min
+15 XP
Earth Processes — Weathering and Erosion
Mountains don't last forever. Wind, water, and ice slowly reshape the Earth — and we can see it happening if we look.
15 min
+15 XP