To show the quadrilateral figures formed by various triangles.
To refine the child's perception.
To develop growth in concentration and independence.
Age
4.5 years old.
Material
This is also a rectangular box. The figures are solid blue and do not have black lines. Two right angled isosceles triangles equal to the yellow and green ones in Box A.
Two right angled scalene triangles equal to the yellow and green ones in Box A.
One obtuse angled isosceles triangle equal to the red triangles in Box A.
One right angled triangle equal to one of the red triangles in Box A.
