This Connex children's science experiment set not only allows children to experience the power and beauty of science, but also allows them to learn a lot of circuit knowledge and cultivate their ability to explore scientific principles and develop innovative thinking. The set has three basic circuit single-product devices. Through different circuit combination devices, 54 circuit play methods can be innovated. Such magical operations require children to understand the working principles of circuits. This toy combination can help children become familiar with components such as motors, wires, switches, battery boxes, etc., and let them understand series and parallel circuits. You don't need to learn physics to understand some basic physical principles through this set, such as sound fluctuations, axial fans, buoyancy, etc.