Arithmetic calculation teaching game - has numbered base plate and numbered construction elements which can be fixed on base plate

摘要

The calculation teaching game has a number of construction elements(2-7) of parallepipedic shape of equal dimensions or multiples of a centimeter. Each element(2-7) can be fixed onto a numbered by plate(1) by means of connection elements (10, 11). The numbers which appear on the base plate vary according to the arrangement of the construction elements on the plate resulting from the calculation operations. The base plate (1) is of rectangular shape and has on two lateral walls a number system whose spacing between numbers is one centimeter. On its upper face is also a number system whose figures are displayed near to the angle formed by construction elements arranged side by side on the plate.