Plane Figures

Contributor: Danielle Childers. Lesson ID: 10073

Have your parents ever told you not to play with your food? Well, today you can! You are going to play with your food and turn it into shapes. In this lesson, you will create plane shapes with food!



learning style
Kinesthetic, Visual
personality style
Grade Level
Primary (K-2)
Lesson Type
Quick Query

Lesson Plan - Get It!


How will marshmallows and toothpicks teach you math? They are fancy tools to show you how to make plain plane shapes!

What is a plane shape?

It's not something that looks like an airplane; it's a shape that has only two dimensions.

A dimension is a measurement, like length, width, thickness, and height. Plane figures have no thickness; they are flat. Get ready to make some plane figures (No, they won't fly!).

  1. First, download and print the Shape Sheet from Downloadable Resources in the right-hand sidebar.
  2. Now, gather some gum drops or marshmallows and toothpicks.
  3. What shape can you create with three toothpicks if the ends of the three toothpicks touch? Did you make a triangle?
  4. Putting a marshmallow at each corner, push the toothpicks inside to keep the shape together. Look at the picture to see what it should look like:

marshmallow triangle

  1. Try now with 4 toothpicks. Make sure all the ends of the toothpicks are touching, so it is a closed shape. Is the shape a square or diamond? You can see the difference by looking below:

square and diamond

  1. Try making both the square and the diamond.
  2. Now, with just marshmallows, can you make a circle?
  3. What other shapes can you make? Be sure that all shapes are closed in, meaning each end of a toothpick is touching another end.

Do you want to play with your food some more?

  1. Have your teacher put a layer of salt in a pie pan.
  2. Using your finger, draw the different shapes, like a triangle, square, rectangle, diamond, circle, and oval.
  3. When you are finished, have your teacher draw different shapes, and you name them!

When you are done, move on to the Got It? section to go on a shape hunt!

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