Jan Hausmann | 19. July 2024
Chinese Abacus (Suan pan) The abacus as a mechanic computing device has been known for more than 3000 years. You can try to represent and to calculate numbers on our electronic abacus. More information Vertiefungstext Mathesnack
Holger Seifert | 8. September 2022
3 times 4 This is a game for "little ones": Press the plate down on one side. Then the balls roll into the field that is the deepest. Do they all fit in? Try it out! More information Advanced text
