Group Micro Teaching Lesson Plan

Here is the lesson plan for Leah and I's group micro teaching!

Class: Foundations and Pre-calc 10
Topic: Difference of Squares
Erika Thompson and Leah Genge

Subject: Foundations of Math 10: Difference of Squares		Class: EDCP 342A	Date: November 2, 2017	Duration: 15 min
		Class Profile	Half the class (~10 students)
Objectives		This lesson will introduce the concept of factoring a difference of squares, equations of the form x^2 - y^2. Teachers will explain why equations of that form can always be factored into (x + y)(x-y), and students will have some time to practice factoring equations of that form.
Curriculum Components		4.2: Relate the multiplication of two binomial expressions to an area model 5.2: Factor a polynomial that is a difference of squares, and explain why it is a special case of trinomial factoring where b =0 5.6: Explain, using examples, the relationship between multiplication and factoring of polynomials. 5.8: Express a polynomial as a product of its factors.
Materials & Equipment Needed		Difference of squares visual proof activity sheet Scissors White board, white board markers
Lesson Stages		Learning Activities			Time
1	Hook & Introduction	Visual proof of the difference of squares Students will have a chance to work in groups develop the proof of the difference of squares themselves using the visual proof activity sheet. By computing the length of each side of each different rectangle, and rearranging the rectangles, students will be able to derive the formula by calculating areas.			5 mins
2	Presentation	Discussion of the Visual Proof The class will discuss what they discovered in completing the visual proof activity sheet Teacher Presentation review: multiplying binomial factors: how you prove it algebraically by expanding out (x+y)(x-y) The teachers will discuss how we can use this proof to factor certain equations. discussion of the use of proving such a claim: speeding up calculations with confidence and certainty The teacher will give examples of different types of equations in which the difference of squares can be useful The teacher will discuss whether there is a similar relationship in equations of the form x^2 + y^2 (there’s not): expanding out (x+y)(x+y) and show how it is NOT x^2+y^2			2 mins 4 mins
3	Practice & Production	As a class we will work through several different applications of the difference of squares, including factoring, and rationalizing denominators with square roots			4 mins
4	Closure	Teachers will address any questions that remain about the topic