This hands on rotation exploration and jigsaw helps students to collaboratively discover the rules for rotating points and figures 90 degrees clockwise, 90 degrees counterclockwise, and 180 degrees about the origin. Students will need a protractor for the exploration as well as the Rotation Tool, included in this resource.
The last page of the document is the "Rotation Tool" that you can build to help students do a hands on-rotation. To build the tool you need to print out two copies of the rotation tool - one on paper and one on printable transparency paper. Secure the transparency exactly over the paper copy by using a brad pin at the origin. Or, if you're crafty like me, a pushpin stuck into the origin and secured in the back by a square eraser works just fine! Students can then perform a hands on rotation of the figure and record the new coordinates.
Instructions for Exploration:
1. Pre-teach how to rotate a points 90 degrees clockwise, 90 degrees counterclockwise, and 180 degrees about the origin using a protractor.
2. Divide students into 3 different groups for the 3 different rotations and hand out each group's rotation materials.
3. Students work collaboratively using their protractor to rotate points and record the new coordinates. They record observations on how the coordinates change after the rotation with their group members.
4. Students use the rotation tool to rotate a triangle and record the new coordinates.
5. Students create a "rule" for each rotation that describes how the coordinates change.
6. Have groups share out their findings to the class or have students do a "jigsaw" and create heterogeneous groups with one student from each rotation rule to teach the other students in each group!