Set of built-in kitchen scales

cults3d

9 plates with hollow spaces for embedding the kitchen strips from 1 to 10. Size of a plate: 15 x 15 x 15 x 0.2 cm. A file of rulers. Working on length: visually identify two identical lengths. Offered in class in an autonomous challenge workshop. Either the rulers are printed in one colour and the lengths are worked on, or real cookers are proposed, and the numbers are also worked on (white=1, red=2...).