To show the quadrilateral figures formed by various triangles.
To discriminate geometric forms.
To develop growth in concentration and independence.
Age:
4.5 years old.
Material:
Two yellow equilateral triangles, black lines on one side. When the two lines are mapped, a rhombus is formed.
Two yellow right-angled isosceles triangles with a black line painted on one side.
When the black lines are mapped, a parallelogram is formed.
Two green right-angled isosceles triangles with a black line on the hypotenuse of each triangle (the line opposite the right angle). When the two black lines are mapped, a square is formed.
Two yellow right-angled scalene triangles with black lines drawn on one side. When the two lines are mapped, an oblique parallelogram is formed.
Two green right-angled scalene triangles equal to the yellow scalene right-angled triangles; black lines drawn on one side. When the black lines are mapped, a parallelogram is formed.
Two gray right-angled scalene triangles, the same size as the yellow and green; black lines painted on the hypotenuse. When the black lines are mapped, a rectangle is formed.
One red right-angled scalene triangle; black lines on one side.
One red obtuse-angled isosceles triangle; black line on one side. When the black lines of the red triangles are mapped, a trapezoid is formed.
