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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