Contributor: Samantha Penna. Lesson ID: 11126

When does 4+4 = 8? When four sides plus four angles equals one quadrilateral! Become a shape detective by singing a song, playing an online game, and gluing toothpicks together to make quadrilaterals!



learning style
Auditory, Visual
personality style
Lion, Beaver
Grade Level
Primary (K-2), Intermediate (3-5)
Lesson Type
Quick Query

Lesson Plan - Get It!

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  • Do you know what a quadrilateral is?

During this lesson, you will learn how to identify quadrilaterals by using clues! Read on to learn the clues that will help you detect which shapes are quadrilaterals and which shapes are not!

You are ready to start learning about quadrilaterals!

Continue reading to learn about shapes that are quadrilaterals.

Take a look at some of the shapes below.

  • What do you notice about all of the shapes?

On a plain sheet of paper, write down some of the things you notice about the shapes.

  • What do some of the shapes have in common?
  • What is different about the shapes?

Write at least two or three sentences about the similarities and differences among the shapes.


Share your sentences with an adult.

  • Did you write down how many sides there were?
  • Did you talk about the angles?
  • Did you name any of the shapes?

Did you notice:

  1. All the shapes have four sides?
  2. All the shapes have four angles (corners)?

The special thing about all of the shapes above is they are all quadrilaterals.

All quadrilaterals have four sides and four angles. Quadrilaterals are two-dimensional shapes. Two-dimensional shapes are flat.

Some examples of quadrilaterals include squares, rectangles, rhombuses, trapezoids, kites, and parallelograms.

Look at the examples of quadrilaterals below:


Move on to the Got It? section to practice identifying quadrilaterals!

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