Constructive Triangles – Box 4

AGE

4 to 4.5 years approx.

MATERIALS

Box 4 is a hexagonal box which contains the following 18 triangles:
1 yellow equilateral triangle with no black lines.
3 green equilateral triangles, two with the black lines on one side and one with black lines on two sides.
2 red equilateral triangles with the black line on one side.
6 red obtuse angle isosceles triangles with the black line opposite the obtuse angle
6 grey equilateral triangles with the black lines on two sides.

DIRECT AIM

To give the child the opportunity to experiment with various geometric shapes.

INDIRECT AIM

To discover, at a sensorial level, the various ways these shapes can be divided and combined to form other shapes.
For later work in Maths and Geometry.

PRESENTATION 1

CONTROL OF ERROR

The black lines.
Visual