Practice with Rotations Tic-Tac-Toe Questions. Practice with Rotations Divide the class into two teams, named “X” and “O”. Draw a large tic-tac-toe grid.

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Presentation transcript:

Practice with Rotations Tic-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 on the game board. –If answered incorrectly, the other team may place their symbol on the game board. The first team with 3 symbols in 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: –R 90°( ΔABC)=ΔA’B’C’ –R 180°( ΔABC)=ΔA’’B’’C’’ –R 270°( ΔABC)=ΔA’’’B’’’C’’’

Question 8 Graph ΔABC under the following rotations: –R 90°( ΔABC)=ΔA’B’C’ –R 180°( ΔABC)=ΔA’’B’’C’’ –R 270°( ΔABC)=ΔA’’’B’’’C’’’