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This Solving Quadratic Equations – Alternative Methods lesson plan also includes:
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There's more than one way to solve quadratic equations. Scholars learn how to solve quadratic equations using alternate methods. They use completing the square by making the linear coefficient even and the leading coefficient a perfect square. They then use u-substitution with u = x – b/(2a).
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Instructional Ideas
- Use the lesson as an extension activity
Classroom Considerations
- Learners should already be familiar with completing the square
- Pupils need to understand transformations of graphs
Pros
- Includes step-by-step solutions for each problem
- Teacher resource shows how and why each method works
Cons
- Few practice problems for learners to complete