Design Description: This design is a children's intelligent arithmetic stick, which adjusts the functions of "playing" and "learning" and integrates the traditional arithmetic stick. When children interact with products, they like to get visual and auditory feedback. Feedback can help children understand what is happening and guide their next behavior. Interesting interactive feedback gives children a better chance of being loved. This design uses the luminous and vibration effects on the font. After the calculated value is correct, the font will touch the luminous state, making children clear the right and wrong of the arithmetic results when calculating. The arithmetic is correct, the font will glow, and the boring arithmetic will also have a sense of ritual.