Practice with RotationsTic-Tac-Toe Questions

Practice with Rotations

• Divide the class into two teams, named “X” and “O”.

• Draw a large tic-tac-toe grid on the board.• Take turns asking questions of each team. The

answer must include an explanation.– If answered correctly, they

may place their symbol onthe game board.

– If answered incorrectly, theother team may place theirsymbol on the game board.

• The first team with 3 symbolsin a row wins the game.

Question 1

• TRUE or FALSE?• This pinwheel is spinning in a counterclockwise

direction.

• WHY?

Question 1

• FALSE• This pinwheel is spinning in a counterclockwise

direction.

• WHY? The pinwheel is spinning in the same direction as the hands of a clock.

Question 2

• TRUE or FALSE?• The number of degrees separating the center

lines of the blades on this fan is 60°.

• WHY?

Question 2

• FALSE• The number of degrees separating the center

lines of the blades on this fan is 60°.

• WHY? There are four blades on the fan. Divide 360° by 4. The blades are 90° apart.

Question 3

• TRUE or FALSE?• This drawing has been rotated 180°.

• WHY?

Question 3

• FALSE• This drawing has been rotated 180°.

• WHY? The rotation is 90°.

Question 4

• TRUE or FALSE?• This triangle has been rotated in a clockwise

direction.

• WHY?

Question 4

• TRUE• This triangle has been rotated in a clockwise

direction.

• WHY? Notice the movement of A to A’ and so on. It is in a clockwise direction.

Question 5

• TRUE or FALSE?• Fish 2 is a 45° counterclockwise rotation of Fish 1.

• WHY?

Question 5

• TRUE• Fish 2 is a 45° counterclockwise rotation of Fish 1.

• WHY? Remember 45° is half of a 90° rotation.

Question 6

• TRUE or FALSE?• Polygon A'B'C'D' is a 180 degree

counterclockwise rotation of polygon ABCD.

• WHY?

Question 6

• TRUE• Polygon A'B'C'D' is a 180 degree

counterclockwise rotation of polygon ABCD.

• WHY? Remember the letters which label the diagram do not have to be rotated.

Question 7

• TRUE or FALSE?• Seahorse 2 is a 90° counterclockwise of

Seahorse 1.

• WHY?

Question 7

• FALSE• Seahorse 2 is a 90° counterclockwise of

Seahorse 1.

• WHY? The rotation is 90° clockwise or 270° degrees counterclockwise.

Question 8

• Graph ΔABC under the following rotations:– R90°(ΔABC)=ΔA’B’C’– R180°(ΔABC)=ΔA’’B’’C’’– R270°(ΔABC)=ΔA’’’B’’’C’’’

Question 8

• Graph ΔABC under the following rotations:– R90°(ΔABC)=ΔA’B’C’– R180°(ΔABC)=ΔA’’B’’C’’– R270°(ΔABC)=ΔA’’’B’’’C’’’