Where does the reflection come from? The vivdeo starts with a quick review of the form of the equation of horizontal and vertical lines and diagonals passing through the origin. Using a pre-image and an image of a reflected figure, the narrator shows how to determine where the mirror line, line of reflection is located. Class members then have the opportunity to practice their skills with two included worksheets.

Concepts

reflections, transformations, linear equations, linear equations writing, coordinate plane, coordinate geometry

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Additional Tags

math

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Instructional Ideas

• Provide a quick review on how to find the midpoint between two points

Classroom Considerations

• Pupils should know how to find the equation of horizontal and vertical lines
• Expects individuals know how to recognize reflections

Pros

• Provides a description of the prerequisite skills needed
• Contains an example of a test question

Cons

• None

Common Core

SL.9-10.2 8.G.A.1.a 8.G.A.3 HSG-CO.A.2 HSG-CO.A.5 MP5 MP6