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!).
- First, download and print the Shape Sheet from Downloadable Resources in the right-hand sidebar.
- Now, gather some gum drops or marshmallows and toothpicks.
- What shape can you create with three toothpicks if the ends of the three toothpicks touch? Did you make a triangle?
- 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:
- 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:
- Try making both the square and the diamond.
- Now, with just marshmallows, can you make a circle?
- 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?
- Have your teacher put a layer of salt in a pie pan.
- Using your finger, draw the different shapes, like a triangle, square, rectangle, diamond, circle, and oval.
- 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!