Preview Only

Create a free account to unlock all content!

Get Full Access

Lines of Symmetry

LESSON MATERIALS move

Generate Student Link

Lines of Symmetry

Lesson PDFs Generate Student Link

What you will learn from this videoWhat you will learn

We'll learn that a line of symmetry cuts a shape into 2 matching halves.
We'll also learn how to identify lines of symmetry.
And we'll see that we can find symmetry in animals, plants, and items we use everyday!

Discussion Questions
- Before Video
  How do you describe a rectangle?ANSWER
  - A rectangle is a 4-sided shape that has two sets of parallel lines that connect at right angles.
  How do you describe a square? ANSWER
  - A square is a type of rectangle with 4 sides of equal length.
  How do you describe a parallelogram?ANSWER
  - A parallelogram is a 4-sided shape that has two sets of parallel lines.
  Can a shape be a square but not a rectangle?ANSWER
  - No. All squares are rectangles, but not all rectangles are squares!
  Can a shape be a rectangle but not a parallelogram?ANSWER
  - No. All rectangles are parallelograms, but not all parallelograms are rectangles!
- After Video
  Does every object have a line of symmetry?ANSWER
  - No. Some objects have no lines of symmetry, some have 1 line, and some have more.
  Do you see any objects around the room that have a line of symmetry?ANSWER
  - Answers may vary.
  Do you see any objects around the room that have no lines of symmetry?ANSWER
  - Answers may vary.
  What are some letters of the alphabet that have lines of symmetry? Do any have more than one?ANSWER
  - If letters are written very simply, then these have 1 line of symmetry: A, B, C, D, E, M.
    These have 2 lines of symmetry: I, O, H, X.
    These have none: F, G, J, L, N.
  Is it true that if we fold a circle anywhere, the fold will be a line of symmetry?ANSWER
  - No. A circle has an infinite number of lines of symmetry, but the line must go through the center of the circle. So the circle must be folded in half.
Vocabulary
- Mirror Image DEFINE
- Symmetry DEFINE
- Line of Symmetry DEFINE
- Rectangle DEFINE
- Square DEFINE
- Parallelogram DEFINE
- Diagonally DEFINE
- Infinite DEFINE

Reading Material
Practice Word Problems
Practice Number Problems
Lesson Plan
Teacher Guide
Assessment
Online Quiz Game Quiz PDF Exit Ticket

Try It Absolutely Free - Choose a role to get started

Preview Only: Watch this full video Absolutely Free. Choose a role to get started:

Choose a role to watch this full video:

Create a free account to unlock all content!

Lines of Symmetry

What you will learn from this videoWhat you will learn

Discussion Questions

Before Video

After Video

Vocabulary

Reading Material

Practice Word Problems

Practice Number Problems

Lesson Plan

Teacher Guide

Assessment