What this lesson teaches
Water cycle.
Make a sealed water cycle model!
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Water cycle.
Making an invisible, large-scale process visible and small-scale in a bag creates a direct sensory experience that abstract diagrams cannot replicate. Students who watch condensation form and drip down a sealed bag have a permanent, self-generated reference for the water cycle.
1. Add water to bag. 2. Draw sun and clouds. 3. Seal bag. 4. Tape to window. 5. Observe.