Replacement Sand, set is a refill of the sand included with the Tectonics model. Set includes one pound each of beige, black, blue, orange and yellow sand
A hands-on volcano model building project complete with safe, simulated lava eruptions. Learn all about types of volcanoes, parts of a volcano, how volcanoes function, and precious gems volcanoes may produce. Kit includes enough materials for 24 students, Meets national standards
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