These sets are part of the material called Graded Geometric Shapes . They are sets of 10 pieces of each shape, which progressively increase in size.
Here are the key details of this material:
1. Composition of the set
The complete set contains 3 sets of 30 pieces (made of hard plastic, red, blue and yellow):
10 Circles: From 1 cm to 10 cm in diameter.
10 Squares: With sides from 1 cm to 10 cm.
10 Triangles (equilateral): With sides from 1 cm to 10 cm.
2. Pedagogical purpose
Unlike the Geometric Cabinet (where they learn the names of the shapes), here the emphasis is on visual discrimination of sizes:
Graduation: The child learns to arrange the shapes in ascending or descending order (the concept of "series").
Math Preparation: Visual introduction of units of measurement (centimeter) and decimals (from 1 to 10).
Overlay: The child can place the smallest circle on top of the largest, observing how the surface changes, which prepares the concepts of area and plane geometry.
3. How to work
Matching: The child can try to find pairs of different shapes that have the same "size" (for example, the 5 cm square with the 5 cm circle).
Drawing: These pieces are often used as templates. The child traces the outline of the shapes on paper to create geometric patterns or to practice pencil control.
4. Connection with other materials
This set is the two-dimensional "brother" of the Brown Ladder (squares/prisms) and the Pink Tower (cubes), providing the transition from volume (3D) to surface (2D).
These shapes help introduce the concept of fractions.
This product is a teaching material, not a toy. Not recommended for children under 3 years of age without supervised by an adult.
