Sensor 15. The Constructive Triangles: Small Hexagonal Box

Shu-Chen Yen's On-Line Montessori Albums

SENSORIAL-MOTOR ALBUM

15. THE CONSTRUCTIVE TRIANGLES: SMALL HEXAGONAL BOX

MATERIALS:

A small hexagonal box containing the following triangles:

1 large equilateral triangle, yellow

6 isosceles obtuse-angled triangles, red

2 equilateral triangles, red

3 equilateral triangles, green

6 equilateral triangles, gray

PRESENTATION:

1. Bring the box to the rug and mix the triangles on the rug.

2. Tell the child that " I am going to show you how to build hexagons".

3. Pick up one equilateral triangle as a control one, then pick up other two equilateral triangle and slide them into the control one to be a trapezoid by matching the black lines.

4. Pick up 2 equilateral triangles and make a rhombus by matching the black lines.

5. Pick up three equilateral triangles and make a trapezoid, then use other 3 equilateral triangles and make another trapezoid.

6. Combine these two trapezoids and make a hexagon.

7. Separate the triangles and let the child do it.

POINT OF INTEREST:

The moment at which the new figures are constructed.

CONTROL OF ERROR:

If the block lines do not match in the newly constructed figures.

DIRECT AIM:

Visual discrimination of form and construction of new forms.

INDIRECT AIM:

Preparation for geometry.

AGE:

3 years.

LANGUAGE:

Rhombus, trapezoid, hexagon (names of the triangles used in constructing these figures if appropriate to age and interest of the child)