Objective: The Constructive Triangles visually teach the
child to see how triangles make other shapes and recognize the whole as a
sum of its parts.
Ages: 3 - 5
Control of Error: The dark black lines on each triangle guide
the child to match only the appropriate sides together.
Presentation: Roll out a rug and select the Constructive
Triangles from the shelf. Remove one set of triangles from
the box. Match the triangles by putting the heavy black lines
together. The triangles form a new shape. Repeat
the process with other sets of triangles. Return the
triangles to the box and place it on the shelf. Put away the
rug.
Extension: Name the triangles and the new shapes created:
right angled isosceles triangle, equilateral triangle,
parallelogram, etc.
Extension 2: The child can draw the shapes in a copy book and write their names.
Creating the Work:
Print the
Constructive Triangles file, trim. Laminate if desired.
The triangles may also be mounted to foam board.
