Concepts such as light, shadow and color belong to the field of physical science. In preschool children's science education, the introduction of these contents can help children understand the essence of light and the principle of color formation. Through observation and experiments, they can learn the basic phenomena of light propagation, refraction and reflection, and understand that color is determined by the frequency and wavelength of light. This kind of educational content helps to cultivate children's ability to observe and think about the material world, and promotes children's interest in science and the cultivation of exploration spirit.