8 years & up. Put your engineering skills to the test and see if you can construct a building that can endure an earthquake with the Aftershock Earthquake Lab. Simply assemble a building on top of the shake table and test your creations with realistic quakes. You can choose from various types of earthquakes, magnitudes and durations. Learn more with the 24-page, full-color Seismic Science book that is included. Book size: 11" x 8.5". Promotes STEM learning. Requires 3 AA batteries (Not included).