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In their studies in physical science, first graders learn that liquids are a form of matter and they experiment with various liquids to learn about their unique qualities. They also experiment with mixing various liquids to find out what happens when different liquids are combined. Do they behave the same once they are mixed together? Is it possible to tell that two different liquids have been combined? Experimenting with different liquids such as oil and water will allow your first grader to examine the answers to these questions and many more, while learning about density. In the activity below, your child will paint with oil and water and discover that that age old assertion is in fact true: oil and water don’t mix. This is a twist on oil painting that your first grader will love!