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Visualize the inside of the earth with this sturdy soft foam model. The color-coded cross section shows the earth's crust, mantle, outer core, and inner core, with information about the depth and temperature of each. The accompanying booklet includes information about the composition of each layer, and has diagrams for your students to label. The model reinforces surface geography as well; each continent and ocean is marked with a letter corresponding to a diagram in the booklet. 5" diameter.