Investigate the revolving properties of spinning! Includes water wheel revolving lift micro disc flyer whizz cards and spool mobile racer. Children will read Ein-O's book of explanations watch the 5 incredible instructional movies and play with all the essential components to repeat Ein-O's science experiments. Busy hands build strong minds! Children are curious by nature and one of the best ways for them to learn is by asking "how does it work. By building problem-solving skills children develop a thirst for additional learning and educational experiences. For ages 7+.