Lesson -- Rotation
Created on: September 10, 2008
Website Address: https://library.curriki.org/oer/Lesson--Rotation
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TABLE OF CONTENTS
Curriki Project Based Geometry
- Selling Geometry
- Designing a Winner
- What's Your Angle, Pythagoras?
- TED Talk: House of the Future
- The Art of Triangles
- How Random Is My Life?
- Introduction to Angles
- Lesson -- Drawing right triangles from word problems
- Accessing Curriki Geometry Projects
- Introduction to Curriki Geometry
What's Your Angle, Pythagoras?
- What's Your Angle, Pythagoras? Teacher Edition
- What's Your Angle, Pythagoras? Student Edition
- What's Your Angle, Pythagoras? Resources
- Curriki Geometry Tools and Resources
General Sites
Lesson: Performing Rotations
Prerequisite Knowledge:
Students must have prior knowledge the coordinate plane. They must have knowledge regarding right
angles.
Learning
Objectives: Students will be able to identify a rotation. Students will be able to visualize a rotation
about the coordinate plane. Students will be able to perform regular polygon
rotations of 90, 180 and 270 degrees on a coordinate plane.
Key
Ideas: Rotations of (x,y) about the origin
Rotation
of 90 (-y,x)
Rotation
of 180(-x,-y)
Rotation
of 270 (y, -x)
Motivational
Problem: Have each student take two
pieces of patty paper. On both of the
pieces, have the students draw an x and y axis in dark marker. On one piece of patty paper, have students draw a
regular polygon in the first quadrant. In their notebooks ask them to sketch the polygon as they rotate the
figure 90°, 180° and 270°.
This
can be modeled by teacher using a transparency on the overhead.
Important
Questions: What is a center of rotation? Explain why rotating 90 degrees clockwise is the same thing as rotating
270 counter clockwise.
