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Check that! The presenter works several polynomial addition and subtraction problems and shows pupils how to check the answer using the table function in a graphing calculator. By typing in the initial problem and the answer in the calculator, viewers are able to see that for every x value the y values are the same, showing that the two expressions are equivalent.
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CCSS:
Adaptable
Additional Tags
Instructional Ideas
- Remind the class what it means for two algebraic expressions to be equivalent
Classroom Considerations
- Learners should be comfortable with combining like terms
- Requires knowledge of subtracting rational numbers
- This video is hosted on YouTube
Pros
- Uses different colors and lines to highlight the like terms
- Shows multiple strategies for adding polynomials
Cons
- None
Common Core
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