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        K-4,13+

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        Auditory, Visual

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        Part of WGBH
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        Comparing Results to Predictions with Balls and Ramps

        In this video segment from Teaching Elementary Physical Science, teacher Heidi Fessenden leads a class discussion comparing the results of her first-grade students’ experiments with their predictions. Students first predicted whether the size of a marble would affect how quickly it reaches the end of a ramp and then conducted the experiment. Looking back at their predictions allows the students to think about why they were right or wrong.

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