Reusable Digital Teaching Roller Stamp Addition and Subtraction Roller Stamp Within 100 Teaching Mathematics Practice Questions

Addition and Subtraction Multiplication and Division Seal Students Within 100 Digital Teaching Roller Practice Questions Stamp
Digital Teaching Roller Stamp
Interesting Teaching · Let Children Love to Learn More
Addition, Subtraction, Multiplication and Division

1. Open the oil cap
2. The oil nozzle oil is aligned with the oil hole and 5.6 drops can be dropped
3. Add the oil cap and cover it