Earth and space topic starter: Day and night
Why do we have day and night, and different seasons? Video and research challenge.
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How long does it take for your heart rate to go back to normal after exercise? Video and activity idea.
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What's an LED and where are they used? Video and challenge.
ViewEvolution and inheritance topic starter: Fossils

What can we learn from a dinosaur's tooth? Video and challenge for students.
ViewForces topic starter: Friction

Why do some shoes provide more grip than others? Video on the topic of friction with supporting activity idea.
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