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This Using the Quadratic Formula lesson plan also includes:
- Polynomial and Quadratic Expressions, Equations, and Functions - Module Overview (PDF)
- Polynomial and Quadratic Expressions, Equations, and Functions - Module Overview (Doc)
- Using the Quadratic Formula (Doc)
- Using the Quadratic Formula (PDF)
- Using the Quadratic Formula (Doc)
- Assessment
- Answer Key
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What is the connection between the quadratic formula and the types of solutions of a quadratic equation? Guide young mathematicians through this discovery as they use the discriminant to determine the number and types of solutions, and to determine if they are rational or irrational. Learners also make a connection to the graph of the equation.
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CCSS:
Designed
Concepts
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Instructional Ideas
- Give examples of discriminants and graphs for repetitive practice until students are proficient with identifying the number and types of solutions
- After finding solutions, ask learners to provide a rough sketch of the graph of the equation
Classroom Considerations
- Requires prior knowledge of the quadratic formula prior
- The sixteenth installment in a 26-part series
Pros
- Care is taken to make connections between the equation, formula, and graph
- Handouts, keys, and thorough teacher guide are provided
Cons
- None