Constructive Triangles - Rectangular Box
We've updated our prices on products from many online Montessori stores! If we've missed your favorite store, please let us know! |
Constructive Triangles - Rectangular Box | |
---|---|
Sensorial - Visual Discrimination of Form | |
Level | Primary |
Age | 4 + |
Prerequisites | Geometric Cabinet |
Materials | Rectangular Box of Constructive Triangles |
Use of this material makes the child aware that all polygons can be made with triangles. This activity prepares the child for geometry.
Presentation
- Invite the child to the lesson. Name the work and show them where it is on the shelf.
- Unroll a large mat (or put two smaller mats side by side).
- Take the box of triangles to the mat.
- Lay the triangles so that the ones that go together are in columns.
- Slide down the bottom triangle for the first shape.
- Trace over the black line on it with your index and middle fingers.
- Trace the black line on the corresponding triangle.
- Slide down the second triangle so the black lines meet.
- Do the same with the other shapes.
Points of Interest
Control of Error
The black lines serve as a control of error when constructing the shapes.
Variations and Extensions
Material
Make Your Own
Printable version available to buy here:
Constructive Triangles - $4.50
Where to Buy
Prices and links last checked: 1 June 2020
Rectangular Box
Materials Company of Boston $75.00
Set of 5 Constructive Triangle Boxes
(Includes: Rectangular Box, Triangular Box, Blue Rectangular Box, Large Hexagonal Box, Small Hexagonal Box)
Adena $88.95
Alison's $157.60
Bruins $290.00
E & O $145.00
Hello Wood $328.00
Kid Advance $89.99
Leader Joy $99.95
Montessori N' Such $80.00
Montessori Outlet $98.95
Neinhuis $299.00
Thinkamajigs $101.96
Blue Triangles Box
Adena $18.69
Alison's $38.25
Bruin's $45.00
E & O $24.00
Hello Wood $53.00
Kid Advance $18.99
Leader Joy $20.95
Materials Company of Boston $31.00
Montessori N' Such $15.01
Montessori Outlet $18.95
Nienhuis $59.60
Thinkamajigs $15.26