The Earth Materials Kit affords an almost endless variety of investigations. Three basic investigations are included, which will serve as a starting point for future investigations. Kit includes 15 pieces each of 24 rock types, and 100 cc’s of crushed granite, 30 pieces of halite, 5 pounds of limestone chips, 1# each of soil horizon A and soil horizon C, storage containers and Teacher’s insert. Enough materials for an entire classroom of 30 students working in pairs.
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