Cylinder Blocks with stand

PRESENTATION OF THE MATERIAL:

4 wooden blocks made of beech. All four are equal in shape and dimensions (45 cm long, 6 cm high, 8 cm wide). Each holds ten fitted cylinders. Three of the blocks each contain 10 cylinders ranging from 5 mm to 5 cm in diameter. One block has 10 cylinders all with a single diameter of 2.5 cm.

The first block: the cylinders vary in two dimensions (variation in diameter)

The second block: the cylinders vary in three dimensions (variation in diameter and height)

The third block: the cylinders vary in three dimensions in the opposite direction;

The fourth block: the cylinders vary in one dimension: height.

PRESENTATION:

- go and fetch the cylinder block from the shelf with the child, placing each hand at the ends

- sit down at a table with the child, placing them on our left

- bring the block close to us

- take out each cylinder one by one using the three fingers: thumb, index and middle finger

- slowly lift the cylinder, keeping it vertical above its socket; begin by removing the cylinders at the ends of the block, either the largest or the smallest, taking out the thickest and the thinnest one after the other, and place each cylinder slowly on the table behind the block in random order

- once all the cylinders are on the table, pick one up - starting with the ends -, bring it above one of the block's sockets while turning it, then visually assess the perimeter of the cylinder and the perimeter of the socket

- once we have judged the two perimeters to match, insert the cylinder into the socket very slowly. Do the same for each cylinder

- once all the cylinders are back in place, invite the child to do the activity in turn