Teaching tools] have their own history of science and explore the important values of physics. Reclining chairs wired chairs. [Newton pendulum] not only shows the pendulum, but also the principle of conservation of kinetic energy and momentum. Friction and damping effects have also been observed. [ornament] Place this Newtonian pendulum on the living room table and you'll think you're in psychology. [Science Toys] when you are tired of studying and working, you can wash the ball to hear the sound of the rattle. You like to have fun, shoot marbles, it relaxes you. [funny objects] Cradle of Newton is a timeless and classic tabletop science "toy". To waste time, relieve stress, be deaf to boring colleagues or educate young people in physics.