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cast-fossil definition: Noun (plural cast fossils) 1. A fossil formed when an animal, plant, or other organism dies, its flesh decays and bones deteriorate due to chemical reactions; minerals gradually enter into the cavity, resulting in a cast, also call...
Fossils are remains of life from the past. The most common kinds of fossil preservation are molds and casts. The activity will give students the chance to make modern day molds and casts. Goal: To teach students two common fossil types; a mold and a cast.