WISSNER active learning Jumbo Arithemtic String, 100 RE Wood Balls Red/White

Demonstration chain of calculations with 100 numbers: 100 red/ white balls (diameter 25 mm) made of RE-Wood, in the 10th step on a 300 cm long string. playfully promote numerical comprehension and facilitate access to the number range up to 100 as well as abstract mental arithmetic packed in polybag 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