RAHWAY — Fourth grade students in Mrs. Prakapas’s class at Roosevelt School in Rahway recently investigated the hardness of minerals to help identify and order them.
Judy Nguyen and Nicole Moncada found that when comparing the hardness of any two objects, the harder one will scratch the softer one.
Jared Carvajal and Lourdes learned that hardness, a mineral property, is the resistance of a mineral to being scratched.
(Photos courtesy of Roosevelt School)
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