A wooden box with one removable side contains a yellow solid beechwood prism, 20x10x10 cm, divided in five prisms 2 cm high. Four out of five prisms have a subdivision of 2x2 cm modules engraved in different ways on the upper side. The box has a UNI EN 71-3 finishing.
YELLOW PRISMS FOR VOLUME
This material is suggested in the first classes of primary school after having worked with the volume box (GE06). It introduces the child to the concept that the calculation of a solid volume involves three dimensions.