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Saltwater vs. Freshwater

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In this lesson students will show the proportion of freshwater compared to saltwater on Earth.
Students will define the problem of having a limited amount of fresh water using evidence gathered from research. They will engineer a device that can change saltwater into freshwater. Students will show their understanding and create models based on their understanding that matter is made of particles that are too small to be seen by the human eye.

Lesson Grade Level

5th Grade

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