ABACO Class Set for counting in the 100s range, red and blue, with numbers, 8 pcs., in a box

Abaco's popular, tried and tested counting and calculating abacuses are also available with printed numbers. This self-checking hundred 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 hundred square and they can independently check the sequence of numbers or their arithmetic tasks.

The hundred square is subdivided into 4 sections, each with 5x5 balls. This makes it easy to use, and the abacus can be used by up to 4 children at the same time.
Since the plastic balls are recessed in the frame, they cannot be lost.

The class set consists of 8 ABACO abacuses for the number range up to 100 with numbers. They are stackable and can be easily stored in the plastic box provided.

With instructions and example applications.

• class set with 8 abacus frames
• in a practical, unbreakable plastic box
• rotating balls, marked with the numbers 1-100

Abaco dimensions: approx. 21.5 x 21.5 x 2 cm
Ball dimensions: approx. 14 mm

Plastic box dimensions:
Outer dimensions: approx. 39 x 25 x 29 cm (L x W x H)
Inner dimensions: approx. 32 x 20 x 27 cm (L x W x H)

Suggestions:

• Explore patterns and regularities
• Where is number 57 hiding?
• Name the numbers before and after a particular number both horizontally (units) and vertically (tens)
• Search for all the numbers ending in 3! How are they arranged in the hundred square?
• Where do I get to, if I move 5 ball positions over to the right?
• Make number predictions
• Solve sums and check them yourself
• Invent dice games with the tens and units dice
• And much more
  

Contents:
• ABACO 100 with numbers, red and blue, abacus
• Stackable plastic box, transparent, 18.5 litres