Making Tetrahedron Shaped Ornaments

Here's a way to combine Geometry and a Holiday Craft Activity.

Materials

• paper
• printer
• crayons/colored pencils/etc. (optional)
• scissors
• glue

Tetrahedrons are 3D shapes made with 4 triangles.  

You can download a tetrahedron model from the Math is Fun Website. Click on the link below.

http://www.mathsisfun.com/platonic_solids.html

You can use white or different colors of paper to print the models.

Students can decorate the 2D Shape (also called a NET), if desired. Then they need to cut, fold, and glue their 2D paper shape to make a 3D Figure.

These Tetrahedrons can be used as colorful holiday ornaments or as decorations any time of year. They can be hung on a tree, in windows, from the ceiling, on a mobile, etc.


Math Facts about Tetrahedrons

• 4 triangular faces (sides)
• 6 edges
• 4 vertices (corners)
• also called a triangular pyramid

  Have fun with math and crafts!