Summary
While hunting for Easter eggs in the backyard, Sid stumbles on a rock that looks different from all the others. That sparks a big question: are all rocks the same? At the Science Center, Sid's class observes and sorts a collection of rocks by color, texture, and size.
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All ages
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Teaching resources
Discussion questions
Discussion
Rocks look plain at first — but a closer look reveals they're all different.
- What properties did Sid use to sort the rocks? Can you think of a property he missed?
- Why do scientists sort objects into groups? How does sorting help you notice things?
- Where do rocks come from? Have you ever found an interesting rock? What made it special?
Quick work-a-long
Vocabulary: rock, property, texture, observe, sort, classify.
Try it: Collect three rocks from outside. For each, describe the color, texture (smooth, rough, bumpy?), and size. Make a simple chart comparing all three.