Factoring difference of perfect squares

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Objective

SWBAT factor differences of perfect squares.

Big Idea

Prime students' brains to see the patterns again with factoring differences of perfect squares.

Lesson Author

Jeff Li MTP

New York, NY

Grade Level

Eighth grade

Subjects

Math

Algebra

Standards

HSA-SSE.A.2

Use the structure of an expression to identify ways to rewrite it. For example, see x4 – y4 as (x2)2 – (y2)2, thus recognizing it as a difference of squares that can be factored as (x2 – y2)(x2 + y2).

MP2

Reason abstractly and quantitatively.

MP6

Attend to precision.

MP7

Look for and make use of structure.

Warm-up

10 minutes

Each day, students complete a Warmup that usually consists of spiraling the previous day's material, in addition to older material. Warm-up problems also sometimes extend lessons that students have encountered before to more unfamiliar contexts.

Today's warm-up provide a "mixtape" of sorts to give kids a small amount of review daily that goes a LONG way toward retention of concepts.

Play of the Day

40 minutes

Huddle

10 minutes

Homework

15 minutes

I want the students' confidence to remain high at this point of the unit, so this problem set has problems at an appropriate level of difficulty to help students stay in the groove:

HW147 Factoring difference of perfect squares

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