Demo Calculation Chain up to 20, red/blue, alternates in 5s
- Order number: 93887
-
- large calculation chain for demonstration
- 20 beads on tear-resistant cord
- with blocks of 5, red/blue
Demonstration video - Detailed product description
| Quantity | Unit price |
|---|---|
| To 9 | €7.95 * |
| From 10 | €6.95 * |
incl. VAT plus shipping costs
Delivery time 3 working days
The counting chain has a firm place as a mathematics resource in primary school mathematics lessons. The pupils are highly motivated to work with it and can perform almost all arithmetic operations independently or in pairs/group work with subsequent self-monitoring.
The 20 beads on the demo calculation chain have a diameter of 25 mm, so that they are still easy for pupils in the back rows to see.
The beads are made of RE-Wood®, i.e. made of pressed, ground up wood scraps that come from production. This material complies with EN 71 (toy standard) and is 100% recyclable.
Made in Germany!
The beads are on a tear-proof cord, comes in a poly bag.
Dimensions: length approx. 100 cm, beads 25 mm diameter
- large calculation chain for demonstration
- 20 beads on tear-resistant cord
- with blocks of 5, red/blue

RE-Wood®
This product is made in Germany from sustainable and ecological RE-Wood®. It is made from scrap wood from German production and a binding agent of 80 to 20 and is therefore produced in a resource-friendly way. It is 100% recyclable, PEFC-certified and non-toxic. This ensures a responsible and conscious approach to recycling.
Items made from RE-Wood® are sturdy, lightweight and are extremely safe to use.

Teaching materials
Product information
This product is designed for teaching and education purposes only under the supervision of an adult (for example, a teacher/trainer).