Instructional Video

Enlargements with Negative Scale Factor

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This Enlargements with Negative Scale Factor instructional video also includes:

How will a scale factor affect a figure—negatively? Using a grid, the narrator of an engaging video performs a dilation with a negative scale factor. The presenter compares a positive scale factor with a negative scale factor to explain what happens to the position of the transformed object. The resource describes the transformation using a given figure and its enlargement, 

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CCSS: Adaptable
Additional Tags
Instructional Ideas
  • Use the ray method to show why the figure is reversed with a negative scale factor
  • Make a connection between negative scale factors and rotations
Classroom Considerations
  • Individuals should understand how to perform basic dilations/enlargements
Pros
  • Provides several opportunities for practice
  • Includes templates to perform the dilations
Cons
  • None