# Geometric Cabinet

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Geometric Cabinet
Sensorial - Visual Discrimination of Form
LevelPrimary
Age3 - 6
Prerequisitespincer grasp
Knobbed Cylinders

This activity teaches the child 2-dimensional geometric shapes and their names, preparing them for geometry.

## Presentations

### Introduction to the Shapes

1. Take the presentation tray to a rug or table.
2. Pick any shape and lift it out by the little knob with your subdominant hand.
3. Hold the shape exposing the back side and run index and middle fingers counter-clockwise.
4. Allow child to trace the shape.
5. Place the inset in an adjacent square.
6. Do the same with the other two shapes.
7. Do a three period lesson on the names of the shapes.
8. To replace the shapes, first trace one of the frames with your dominant hand in a counter-clockwise direction.
9. Find the shape that matches and put back in place.
10. Later, do other lessons with three shapes at a time.

### Mixing and Replacing

1. Take one of the drawers to a mat or table.
2. Remove one of the shapes and trace the back as before.
3. Place the shape below the drawer.
4. Do the same with the other shapes in the drawer. Place them in mixed-up order.
5. Trace the first frame as in the introductory lesson.
6. Look for the shape that fits the frame.
7. Trace the back of the shape.
8. Place the shape in the frame.
9. Replace the other shapes in the same way.
10. Later, select two drawers and mix the shapes from both. Replace as was done with one drawer.
11. Later, do the same with three drawers, then four. Eventually, the child may mix all six drawers together.

## Control of Error

The shapes with only fit in the correct frames.

## Variations and Extensions

• Have the child look for objects from the environment that are examples of each shape.

## Materials

Prices and links checked: 23 January 2022

Geometric Cabinet
Store Price
Affordable Montessori \$189.00
Alison's \$198.45
Alison's
\$415.00
Bruins \$513.00
E & O \$268.20
Hello Wood \$646.00
IFIT \$158.00
Materials Co. of Boston \$220.00
Materials Co. of Boston
cabinet only
\$120.00
Montessori Concepts \$180.00
Montessori Outlet \$179.95
Nienhuis \$511.50
Thinkamajigs \$189.95
Demonstration Tray
Store Price
Affordable Montessori \$42.00
Alison's \$36.38
Alison's
\$85.00
Bruins \$615.00
E & O \$43.20
Hello Wood \$126.00
IFIT \$30.00
Materials Co. of Boston \$69.00
Montessori Concepts \$37.00
Montessori Outlet \$38.95
Nienhuis \$113.20
Thinkamajigs \$42.95
Cards
Store Price
Affordable Montessori \$29.00
Alison's
includes cabinet
\$55.12
Alison's \$38.00
Bruins \$43.00
E & O
includes cabinet
\$62.10
Hello Wood \$37.00
IFIT
9 cards
\$6.00
IFIT \$22.00
Materials Co. of Boston \$33.00
Materials Co. of Boston
9 cards for demo tray
\$17.00
Montessori Concepts \$9.00
Montessori Outlet \$1.95
Nienhuis \$30.80
Thinkamajigs \$34.95
IFIT
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\$2.00
Montessori Outlet \$12.95
Card Cabinet
Store Price
Alison's \$50.00
Bruins \$52.00
E & O
includes cards
\$62.10
Hello Wood \$67.00
Hello Wood
trapezoidal shaped
\$90.00
Materials Co. of Boston \$38.00
Montessori Outlet \$26.95
Nienhuis \$64.00
Thinkamajigs \$14.95
3 Section Card Box
Store Price
Affordable Montessori \$15.00
Affordable Montessori \$15.00
Alison's \$35.00
Bruins \$28.00
Materials Co. of Boston \$30.00
Montessori Outlet
shelves
\$12.95
Montessori Outlet
box
\$12.95
Card Tray
Store Price
Alison's
includes 9 cards
\$24.00
Bruins \$93.00
E & O
includes 9 cards
\$6.30
Montessori Outlet \$9.95
Nienhuis
with 9 cards
\$32.30
Replacement Inset
Store Price
Control Chart
Store Price
Affordable Montessori \$9.00
Alison's \$12.00
Montessori Outlet \$5.95
Nienhuis \$18.90
Thinkamajigs \$6.95
Three-Part Cards
Store Price
IFIT \$5.00
Montessori Outlet \$4.95
Nienhuis \$15.90
Thinkamajigs \$10.95
Stencils
Store Price
Albanesi \$81.00
Control Book
Store Price
Nienhuis \$20.00
Beginning Labels
Store Price
Nienhuis \$12.80