In this engaging activity, students examine geometric transformations on coordinate planes as Detectives!
They visit 12 cases, deciding if the pre-image and image are similar and/or congruent, identify the ordered pairs for the vertices, and describe the transformation. Some transformations are single step, and some are multi-step. They include translations, reflections, rotations, and dilations.
Ideas for Lesson:
- Detectives (students) visit each case and fill out their reports individually. They do not need to go in order, so the cases can be spread around the room. Then detectives meet as a group to discuss and agree on the cases!
- Early finishers can work on the Challenge! This page asks questions about some of the transformations to push students to deeper thinking.
- The Follow Up page works great as an exit ticket or quiz. This page is an easy way for the teacher to check for understanding.
Answer keys are included at the end.
- 8.G.A.2 Understand that a two-dimensional figure is congruent to another if the second can be obtained from the first by a sequence of rotations, reflections, and translations; given two congruent figures, describe a sequence that exhibits the congruence between them.
- 8.G.A.3 Describe the effect of dilations, translations, rotations, and reflections on two-dimensional figures using coordinates.
- 8.G.A.4 Understand that a two-dimensional figure is similar to another if the second can be obtained from the first by a sequence of rotations, reflections, translations, and dilations; given two similar two-dimensional figures, describe a sequence that exhibits the similarity between them.