# Transformations Review

Lesson 5 of 6

## Objective: SWBAT apply their knowledge of the concepts covered in this unit to a unit review problem set.

*90 minutes*

#### Lesson Opener

*5 min*

I begin this assessment day lesson with a quick Do Now to get students thinking about the equations of lines and their use in transformations in the plane.

#### Resources

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#### Going Over the Homework

*10 min*

The homework assignment (Practice with Transformations) was a collection of multiple-choice questions from previous Statewide assessments. For review, I call on students to give their answer to each question. If everyone agrees, we move onto the next question; if anyone disagrees, we take the time to discuss that question.

The most difficult question on the assignment is typically Number 25. The answer choices include a reflection across y=-x **and** a rotation of -90 degrees. We have come across negative angles occasionally in this unit, especially when the students were making up their own compositions, but this is another chance to discuss this concept.

#### Resources

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This is a simple matching activity to review and build confidence before the assessment. Students, working in pairs, match the preimage to the image, given a composition of transformations. I make both plain paper and graph paper available to the students for this activity, so they have choices with regard to how they find their solutions.

I run the Composition, Matching Cards materials off using different colored paper. I cut them out ahead of time, rather than using class time, and I mix the colors, so that every student-pair's cards contain the preimage and composition in one color and the image in a different color. (See the Photo of Composition Cards.) I also hand out an answer sheet, on which the students record their answers.

When all the pairs finish discussion (**MP3**), the matching of cards, and the recording of their answers, we go over the answers as a group.

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#### Lesson Closing

*5 min*

I spend the last five minutes of this class tying up any loose ends. I let the students know when I am available for any extra help, and ask for suggestions from the students as to how they might go about preparing for the test.

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