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Crash Course Kids: A Year of Science Review

A fun year-end review of big science ideas — food chains and food webs, Earth's four spheres, the water cycle, matter, and how gravity keeps us orbiting the Sun.

How it works

  • Press play to start the video.
  • Videos 5 minutes or longer pause once or twice for a quick check. Get it right and you're on your way. If not, you'll see a friendly explanation and the video simply keeps going. Short videos skip the checks.
  • At the end there's a 3-question test. Score 60% or more to complete the lesson, and 80% or more to master it. You can always watch again and try for a higher score.