Formation of Rain
Students sequence the steps leading to the formation of rain, and design a model to represent these steps. This task assesses students' abilities to classify, generalize, infer, interpret and communicate data, and construct a pictorial model.
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Using Environmental Models to Determine the Effect of Acid Rain on an Ecosystem
Demonstrate to your middle school science learners how chalk breaks down in a weak acid. Discuss what affects acidic rain might have on ecosystems. Lab groups then choose one of two questions: "How does acid precipitation affect an...
7th - 8th Science