Newton's Cradle Balance Balls Toy, Physics Science Pendulum Wave Balls Educational Kits Desk Fun Toy Gift for Kids Adults (C)

【HOW TO PLAY】Pull back one or more of the balance balls, release them and the same number of balls will swing up on the opposite side. 【EDUCATIONAL SCIENCE GADGET】Not only demonstrates a pendulum, but also shows the principles of kinetic energy and conservation of momentum. Friction and damping effects are also observed. 【RELEASE THE PRESSURE】Balance balls decor perfect for releasing the pressure and killing boring time, When you are tired of studying and working, you can stir the ball to hear the clinking sound to ease. 【EDUTAINMENT】 Balls science toy suit for both kids and adults, they could experience the fun of mechanics in the process of playing this fun gadget and explore significant values of physics. 【PERFECT DECORATION】Not only a toy, but also a great desk ornament for home or office. Also good for birthday gift and kids toy., Manufacturer: Zerodis