Collection of 16 progressive activities split into 4 series of 4. It is complemented by 72 small cards indicating the quantities in grams (g) and milliliters (ml). All of the worksheets are made of plastic designed for classroom use. The decomposable cubic decimeter activities allow children to discover the correspondence between the different measurement units: the weight, the volume and its representation through pieces of the game, first involving handling and then abstraction and understanding, promoting reasoning