Sorting Equations and Identities

This lesson is intended to help you assess how well students are able to:

  • Recognize the differences between equations and identities.
  • Substitute numbers into algebraic statements in order to test their validity in special cases.
  • Resist common errors when manipulating expressions such as 2(x – 3) = 2x – 3; (x + 3)2 = x2 + 32.
  • Carry out correct algebraic manipulations.

It also aims to encourage discussion on some common misconceptions about algebra.
Resource ID#: 32537 Type: Lesson Plan
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Direct Link: http://map.mathshell.org/materials/lessons.php?taskid=218#task218

General Information

Subject(s): Mathematics
Grade Level(s): 9, 10, 11, 12
Intended Audience: Educators educators
Suggested Technology: Interactive Whiteboard, LCD Projector, Overhead Projector
Instructional Time: 1 Hour(s) 20 Minute(s)
Keywords: equation, identities, algebra, manipulation
Instructional Component Type(s): Lesson Plan,  Presentation/Slideshow,  Formative Assessment
Resource Collection: General Collection

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