WISSNER active learning 100 Student'S Abacus, RE Wood Red/Blue

Rack of 100 numbers 25 x 17 x 4.5 cm; frame parts and balls (diameter 13 mm) made of RE-Wood. All parts are screwed together. Very stable design with stainless steel rods. Counting and all basic arithmetic operations (addition, subtraction, multiplication and division), but also numerical size comparisons in the range 0 to 100 can be learned or consolidated easily and vividly. packed in sealing foil made of RE-Wood: 100% recyclable, certified with the PEFC seal and free of harmful substances; complies with toy standard DIN EN71-3 Made in Germany