Chapter 1 · Visual Dimension
Pink Tower
Ten pink cubes graded in three dimensions.
Age 3-4 · 14 steps · Core
Purpose
To refine the visual perception of dimension. The child isolates and discriminates ten gradations of three-dimensional size, with all other variables (color, texture, weight ratio) held constant.
Material used on this presentation
Ten pink wooden cubes, graded from 1 cm to 10 cm on each side, increasing by 1 cm in each dimension per cube, so the volumes run from 1 cubic centimeter to 1000 cubic centimeters.
Readiness
3-4 years. Child should be able to walk carefully carrying objects, unroll a rug, and sit at work for 10+ minutes.
Key language
"This is the largest cube." "This is the smallest cube." "This one is larger than that one." "Can you find the one just a little bit smaller?" "Cube. Face. Edge. Corner. Base.' (Geometry vocabulary the child meets here.)" "The smallest cube measures the difference between each cube, one centimeter."
"Before carrying the first cube, kneel at the child's level and say: 'The world is full of things, some big, some small, some tiny. A tower of a castle is big. A tower of blocks is smaller. And sometimes we build towers just to see how carefully we can place one thing on top of another.' Let them hold the smallest cube and the largest cube at the same time, one in each hand. The weight difference is the lesson before the lesson."
Conversational script
14 steps- 1
DoInvite the child by name to come work with the Pink Tower.
SayI have cubes that get smaller and smaller, and we can stack them into a tower.
WatchThe child's response to the invitation.
- 2
DoWalk together to where the Pink Tower lives on the shelf, and show the child the place.
WatchThe child noting where it lives.
12 steps
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