6 years & up. There's nothing like an erupting volcano to get kids fired up about earth science! This large plastic model makes volcano demonstrations easy AND mess-free. One half of the detailed cross-section shows the inside, the other has corresponding labels A, B, C and D for assessing knowledge. Includes easy-to-make lava recipe and 13" clear plastic tray for quick clean up. Measures 11" H x 13" W and includes fact-filled Teacher's Guide.