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Grades 3–5. Give students firsthand experience with the water cycle—evaporation, condensation, and precipitation - as they set up their own experiments, make predictions, record observations, analyze data, and build explanations. Students begin to explore the relationships between the water cycle and weather conditions by focusing on describing and classifying clouds, then they relate cloud formation to the water cycle and weather patterns. Students decode local and national weather maps, learning the meanings of symbols that represent weather phenomena. The class participates in an experiment that demonstrates the uneven heating of the earth's surface and then focuses on its effects. Students also learn what happens when cold and warm fronts meet. Using a barometer, they chart changes in air pressure over time and relate local weather to the barometric changes recorded.
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