Other School Supplies Digital

Label:Yes Weight: 70g Material: PVC Stamp size: about 5x7cm Color:As the picture shown Name: Mathematics Practice Number Rolling Stamp Features: 1.2 Model: Addition and subtraction, free choice, interesting pictures, numbers 1-100. 2. Simple Operation: Math questions appear in front of you by rolling stamps, you can adjust them, you can change the questions with a single twist, and choose the questions randomly. 3. Adjustable: The stamp is clear, no ink is left, it can be adjusted, and the questions are randomly selected. 4. Recycling: Add ink to the oil hole, add ink, it can be recycled. 5. Learning Fun: Teaching stamps that are as interesting as toys make learning fun and