色棒

"Four Arithmetic Operations (Color Stick)" is an electronic problem-solving tool that integrates self-study and teaching. Students can use this app to preview and self-study before class, and they can also review and understand the meaning of addition, subtraction, multiplication and division word problems after class. Teachers can also use the color sticks in this app in class. Through different mathematical models, text is visualized to help students understand and master the problem-solving methods of applied problems.