Unit 1, Lesson 14
Defining Rotations
Integrated Math 1
Preparation
Lesson Narrative
The purpose of this lesson is to develop a rigorous definition of rotation. Students first focus on what information is important for defining a rotation. In an optional activity students can begin to determine properties of rotations by rotating segments to make isosceles triangles. Students attend to precision when they clarify what information they need to uniquely determine a given rotation (MP6).
Technology isn't required for this lesson, but there are opportunities for students to choose to use appropriate technology to solve problems. We recommend making technology available.
- Comprehend that the term “rotation” (in written and spoken language) requires several descriptors including angle, center, and direction.
- Determine whether a figure is a rotation of another.
- Draw rotations of figures.