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If you hate to evaluate, here's a video that might just change your attitude. Pupils watch a concise YouTube video that shows how to evaluate the expression -7x^2-4y^2-8xy+7. It describes how using parentheses when substituting negative values is a good idea.
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CCSS:
Adaptable
Concepts
Additional Tags
Instructional Ideas
- Pause the video at each step to have the class identify the next step
Classroom Considerations
- Learners should be able to calculate with negative values
- Note that the video references polynomials, but understanding of polynomials is not necessary
- This video is hosted on YouTube
Pros
- Color coding helps identify the appropriate substitution
Cons
- Shows only one problem