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Lesson Plan : 5.8 The Quadratic Formula
Teacher Name: | Emily Werner |
Grade: | Grade 11-12 |
Subject: | Math |
Topic: | The Quadratic Formula |
Content: | Using the quadratic formula to solve quadratic equations |
Goals: | -To teach students where the quadratic formula comes from -Teach students how to use the quadratic formula in solving -Teach students how to find complex solutions using the quadratic formula -Teach students what the discriminant of the quadratic formula is, and its properties -Teach students how to use the discriminant |
Objectives: | 1) Students will understand that the quadratic formula is not some random formula 2) Students will have a better understanding of how to use the quadratic formula when solving quadratic functions 3) Students will build on their knowledge of square roots and complex numbers 4) Students will have a beginning understanding of the discriminant and how to use it |
Materials: | overhead, overhead markers, transparencies, calculator, whiteboard, whiteboard markers |
Introduction: | Teacher describes the quadratic formula and shows students where it comes from |
Development: | -Teacher shows students to use the quadratic formula when solving quadratic equations -Teacher shows students how to find complex solutions when using the quadratic formula -Teacher defines discriminant and its properties -Teacher shows students to use the discriminant |
Practice: | Example 1: 3(x^2)+23x+40=0 (QF) Example 2: 3(x^2)+2x=-4 (complex solutons w/QF) Example 3a: (x^2)+5x+10=0 (discriminant) 3b: (x^2)+6x+9=0 |
Accommodations: | technology, different colors, auditory and verbal explanations and directions |
Checking For Understanding: | -Teacher will ask students questions throughout the lecture -Teacher will try to get students involved inorder to gauge their understanding |
Closure: | -Teacher gives students homework assignment -Teacher reminds students to show their work, to write out original problem, and to use calculator to check |
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