MATHEMATICAL PRINTER UNKNOWN DERF KIDEA B/C

Kidea math problem stamp for practising Equations operation. These unique roller stamps let you create many different combinations of mathematical operations - simply change the number setting with the knob. With these stamps, a game element can easily be added to maths problems, and the way they are set can be varied. In addition, it is a creative teaching aid for parents and teachers, who can leave the invention of new combinations of mathematical operations to the small device.

The maths stamp is ideal for reviewing material before a test or exam. And when the ink runs out, it can easily be refilled with new ink.

• Dimensions: 6 x 2 x 4 cm.