Thursday, June 14, 2018

Toothpick Gumdrop Geometry

We recently did a fun engineering activity building towers out of toothpicks and gumdrops. The kids loved it and spent a good portion of our morning building. While watching them, I came up with a simple hands on geometry lesson using the same materials.

In this post I will share a fun hands on way to teach geometric shapes and the difference between 2D and 3D shapes.

Toothpick Gumdrop Geometry:

For this activity you will need:



Using the toothpicks as sides and gumdrops to fasten them at the corners, have your child build some of the familiar 2D shapes like a square, a rectangle, a triangle, a trapezoid, and a parallelogram.

You can also build some of the 2 D shapes with more sides like pentagons, hexagons, octagons, and decagons.

Then try to build some of the 3D shapes like a cube, a rectangular prism, a triangular prism, and a pyramid.

Extend The Learning:

Learn more about geometric shapes from these online resources: 

3D Shapes from

2D Shapes from

Common 3D Shapes from Math Is Fun

3D Shapes I Know from Harry Kindergarten Music

If you enjoyed this post, check out:

Hands On Fractions

Aluminum Foil Boat STEM Activity

The Egg Drop STEM Challenge

Follow me on:



  1. I also want to homeschool my kids so such creative ideas are very useful. Thanks for sharing

    1. Thanks for reading :-)
      I love homeschooling my kids.

  2. This seems like a very creative and fun way to teach children. Coming up with 3D shapes adds some complexity to the lesson too. Great idea!


6 Reasons To Let Your Kids Play In The Mud

My kids love playing in the mud. And while it can be messy, I try to let them do it often. I remember making mud pies and sticking my bare t...