Activity:

Rotational Symmetry Game

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What You Need:

  • Deck of cards
  • Paper
  • Pen or marker

What You Do:

  1. Help your child divide the paper in half with the black marker.
  2. Next, encourage him to write the word “Symmetrical” across the top left half of the paper.
  3. Have him write out the words “Non-Symmetrical” across the top right half of the paper.
  4. Let him shuffle the cards. Lend a hand if he's having trouble.
  5. He should then flip the top card over and lay it face up on a flat surface.
  6. Have him say the number and suit aloud.
  7. Ask him to turn the card 180 degrees.
  8. Challenge him to determine if the card is symmetrical after being turned. If he's struggling, join in to help him figure out if suit on the card is symmetrical or not.
  9. If the suit is symmetrical, have him record the number and the suit of the card in the “Symmetrical” column.
  10. If the suit is not symmetrical, have him write the number and suit of the card in the “Non-Symmetrical” column.
  11. Keep playing until he correctly identifies all the cards in the deck.

If you're playing with a group, have the players each create their own score sheet and take turns determining whether or not a card is symmetrical. Kids should be awarded a point when they correctly identify a card as being either symmmetrical or non-symmetrical. After you've gone through the deck, have the players add up their points to determine the winner!

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