LEGO Kids Chain Reactions is an exciting way to introduce kids to chain of reactions. One thing leads to another. They will enjoy the experience. The kit contains a 78 page book with inspiring ideas, instructions for 10 LEGO machines. The machines are able to spin, swing, pivot, roll, lift, and drop. LEGO Kids Chain Reactions has 33 LEGO elements, 6 LEGO plastic balls, string, paper ramps, paper pop-up signs, paper funnel ramp, paper flag, paper bucket and a platform. Kids will be able to build and design 10 moving machines. LEGO Kids Chain Reactions is suitable for kids ages 8 and up. Contains 78 pages of detailed instructions. Easy to advanced levels.