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Allow your students to model sampling the diversity of macroinvertebrates in stream while in your classroom. This is a great way to bring macroinvertebrate sampling to students who might not get the opportunity to do this firsthand or to preview macroinvertebrate sampling before going in the field. Each illustrated card is printed with a biotic index value and a pollution tolerance value. By making simulated streams using an assortment of cards, you can challenge your students to determine the health of a stream. Card size, 4-1/4 x 3-1/2". Set includes 280 cards—10 each of 28 representative macroinvertebrates.
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