ABACO Class Set for counting in the 20s range, red and blue, with numbers, 24 pcs., in a box

Abaco's popular, tried and tested counting and calculating abacuses are also available with printed numbers. This self-checking twenty square board opens up an endless variety of fun games to practise.

The balls in the rows of ten alternate between red and blue, the rear is grey. With a little finger movement to the right, each ball can be turned grey and the number value is no longer visible. This lets children practise becoming familiar with the twenties number range and they can independently check the sequence of numbers or their arithmetic tasks.

The abacus can be used by 1-2 children at the same time.
Since the plastic balls are recessed in the frame, they cannot be lost.

The class set consists of 24 ABACO abacuses with numbers, red-blue, They are stackable and can be easily stored in the plastic box provided.
With instructions and example applications.

Abaco dimensions: approx. 21.5 x 6.5 x 2 cm
Dimensions balls: approx. 14 mm ø

Plastic box dimensions:
Outer dimensions: approx. 36 x 25 x 15 cm (L x W x H)
Inner dimensions: approx. 34 x 21.5 x 14 cm (L x W x H)

• rotating balls, marked with the numbers 1-20
• for adding and subtracting plus counting, complementing and comparing,
• also useful for checking your own work

Contents:

• 24 ABACO 20 with numbers, red and blue, abacus
• Plastic box stackable, transparent, 10 litres (A4 XL)