Constructive Triangles – Box 3

AGE

4 o 4.5 years approx.

MATERIALS

Box 3 is a hexagonal box which contains the following 11 triangles:
3 yellow obtuse angle isosceles triangles with black lines opposite the obtuse angle on the longer side.
3 yellow obtuse angle isosceles triangles with the black line on both sides containing the obtuse angle.
2 grey obtuse angle isosceles triangles with the black line on one of the sides containing the obtuse angle.
2 red obtuse angle isosceles triangles with the black line opposite the obtuse angle
1 large yellow equilateral triangle with the black lines on all the 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