Đồ chơi lắp ráp bắn bóng DIY giáo dục thí nghiệm khoa học

1.Type:DIY Table Tennis Elastic Launcher 2.Material:Wood 3.Power:Elastic force. 4.Size:27.5*13cm(L*W) 5.Healthy and Eco-friendly materials,edutainment. 6.DIY science kits toy make children's own toy. 7.DIY science kits,we allow children to construct objects , builds motor skills, and enhances creativity. 8.It Can excite children's curiosity and promote imagination, developing intelligence, exercising the ability of using hands and brain. 9.Through experiments,we can foster kids sharp observation ability, deliberate thought ability, strong practical ability and creation ability. 10.Please use under adult supervision and guidance.Parents and children to assemble it together to improve parent-child relationship. 11.It's useful for keeping track of unproductive habits, like play phone and online game for a long time. 12.Increase the fun between children.Very nice gift for them. 13.Principle: The potential energy of the elasticity is converted into kinetic energy and the resulting kinetic energy allows the ball to bounce a straight line distance of about 4 metres Package includes: 1 * DIY Table Tennis Elastic Launcher 1 * Instruction