Teaching stamps that are as interesting as toys make learning fun and exciting, and increase children's interest in learning.
Addition and subtraction, free choice, interesting pictures, numbers 1-100.
Add ink to the oil hole, add ink, it can be recycled.
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.
The stamp is clear, no ink is left, it can be adjusted, and the questions are randomly selected.