Abacus is a rake frame teachers tool to demonstrate additions and subtractions up to 100.
A total of 100 beads (20mm diameter). 10 beeds x 10 rows. In 5 different colors (red, orange, yellow, green, blue)
Counting and all basic arithmetic operations (addition, subtraction, multiplication and division), but also number size comparisons in the range 0 to 100 can be learned or consolidated easily and vividly.
made of wood
Dimensions: 33 x 30 x 7.5 cm