Portable abacus: Abacus is easy to carry and helps people improve their hand-eye-brain coordination. Mathematical tools: It can deepen the understanding of numbers, counting, addition, quick calculation and subtraction. Applicable occasions: Abacus is widely used for students' counting exercises or school math teaching aids. Made of wood: You can use it with confidence, it is a tool that still has full functions. Using an abacus as a math teaching tool can make math practice more effective, is a good way to teach calculation, and makes learning much easier.