Creating Line Symmetry

Test out your knowledge of symmetry in this fun geometrical activity! You will need to work together to create images that have symmetry, or sides that reflect one another. Take turns leading and following as you work towards a better understanding of what makes something symmetrical. Think of real-life examples, such as a heart, and try to create these designs with your partner.

Terms to Know:

bilateral symmetry: exact reflection of a shape or form on opposite sides of a dividing line or plane (Think of a person, split straight down the middle.)

radial symmetry: similarly arranged parts regularly arranged around a central axis (Imagine looking up at a jellyfish, or down at a flower.)

What You Need:

• One deck of cards
• A meter stick, or some other dividing line (such as a piece of string)

What You Do:

1. Place a meter stick, or other divider, between the two players. This line will be used to help players create bilateral symmetry between the sides.
2. Players take turns placing one card at a time, face down, on their side of the divider. One player will lead, while the other follows in an attempt to match the other player's moves perfectly on their side of the divider.
3. Start with a limit of 3 cards, and add a new card every time a new round begins. Switch leaders for each round.