This gear series product is a scientific toy for children aged 5 and above to manually operate gears, driving the rotation of various gears and three central spheres. Through playing with it, children can learn about the continuous transmission of gear teeth and the basic principles of kinematics. When operated, gears of different sizes, colors, and styles, along with the three central spheres, rotate consecutively at different speeds under force, providing children with an experience of mechanical beauty and an initial understanding of physical rotation. It also helps develop children’s comparative observational skills, hand-eye coordination, motor skills, and hands-on cognitive abilities.

At the same time, it aims to transfer the rotational principles to the basic knowledge of the “self-rotation” and “revolution” of the sun, earth and moon in the universe. This toy material can also be used as part of creating displays for the walls in the science discovery room at kindergartens.