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pressure-sensitive
Classify sedimentary rocks as clastic
The Multi-Gate expands 90" and locks in place at a desired length
Legend area measure 12in x 24in
Expanded Rock Collection Specials pressure-sensitive45 specimens, approximately 1. 5" x 1. 5", includes 15 each of igneous, sedimentary and metamorphic rocks. Each category of rock is well represented and forms an integrated classroom study unit. Grades 6 12. Ages 11 18.
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