Subtraction counting fan with self-checking – one of four fans for practising the four basic operations, with the string revealing the correct answer.
At a Glance
- 10 cards per fan: comprehensive practice material
- Self-checking: string shows the correct answer
- String in groove: clicks when the answer is correct
- Verification on the back: diagonal lines show the path
- Compact: 5 x 15 cm, approx. 2.5 cm thick
How children play with it
Read the problem on the left side, find the matching answer on the right. Thread the string into the groove beneath your answer, then flip the fan over. On the back, the diagonal line maps the path. Children can check their own maths – the string shows whether they’ve got it right. A learning tool that needs no teacher, just a child’s curiosity.
Safety and Materials
| Material | Plastic |
|---|---|
| Dimensions | 5 x 15 cm, 2.5 cm thick |
| Cards | 10 per fan |
| Operation | Subtraction |
| Age recommendation | From 3 years |
Shipped from Germany. Invoicing available for educational institutions and public authorities.
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