What's the opposite of multiplying binomials? Learners apply their previous knowledge of multiplying binomials using algebra tiles to factor trinomials. The lesson introduces factoring as a process that uses algebra tiles to work backwards from multiplying binomials.

Concepts

factoring trinomials, trinomials, algebra tiles

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Additional Tags

math

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Instructional Ideas

• Use this resource to introduce factoring trinomials

 

Classroom Considerations

• Assumes learners understand how to use algebra tiles to multiply binomials
• It is possible to split the lesson into two days, one for when a = 1 and another for when a > 1

Pros

• Provides a link to an applet that uses virtual algebra tiles in case physical algebra tiles are not available
• New and veteran teachers alike will appreciate the post-reflection

Cons

Common Core

HSF-IF.C.8.a MP2 MP3 MP7 MP8