Lesson Plan
Half-to-Half Symmetry
Where's the other half? In this lesson, young mathematicians learn the relationship between halves and symmetry through a fun scavenger hunt. Your students will have a blast figuring out what makes a shape symmetrical.
Grade:
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Learning Objectives
Students will understand the concept of symmetry and be able to identify lines of symmetry.
Introduction
(5 minutes)- Hold up a piece of paper and fold in half.
- Ask students for "help" on how to make a heart.
- Guide students toward the idea that you need to make half of a heart, then unfold it.
- Think aloud as you cut half of a heart about how both sides will match and be symmetrical since you folded the paper evenly.
- Open up and display the two halves that made a whole heart.
- Point to the middle and draw an invisible line from the top to the bottom. Explain that this invisible line, where the fold was, is the line that divides in half two sides that match. Add that his line is called a line of symmetry.