Today we broke apart cookies to see all the minerals inside. A cookie is like a rock it has a lot of minerals inside. A mineral is like a chocolate chip because it is chocolate all the way through. We liked this activity because it was fun taking all the minerals out of the cookie. The cookie was delicious! We have also tested the hardness of different minerals using a steel nail, a penny and a finger nail. We found out that not all minerals have the same hardness. We did a streak test to see if the mineral left a mark behind.
By Holly E. and Joyce P.
By Holly E. and Joyce P.
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