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    rocks
    By melanie

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    Have each of the kids bring in samples of rocks that they may have at home. Classify them as metamorphic, igneous, or sedimentary. You'd be surprised at the variety of rocks you will get in. Some might even have a rock collection. If you have a university in your area, you will be able to purchase a hardness testing kit for around $5-10. They are sold at the university or college bookstores for students in earth sciences. My university actually has a rock museum (in the earth and atmospheric sciences department) that the kids can go for a fieldtrip to. The grad students are also willing to share their expertise. Just a few ideas, if you need more, post.



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