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FLORIDA Pre-Algebra Teacher’s Guide Vol. A

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Use this guide to accompany Lesson 2.11, Semester A. Strange Solutions LESSON GOALS • Solve equations that result in an identity or a contradiction. • identify the number of solutions to a linear equation. FLORIDA STANDARDS • MAFS.8.EE.3.7a. Give examples of linear equations in one variable with one solution, infinitely many solutions, or no solutions. Show which of these possibilities is the case by successively transforming the given equation into simpler forms, until an equivalent equation of the form x = a, a = a, or a = b results (where a and b are different numbers). • MAFS.8.EE.3.7b. Solve linear equations with rational number coefficients, including equations whose solutions require expanding expressions using the distributive property and collecting like terms. PACING One class period, approximately 60 minutes KEYWORDS Students can preview definitions of keywords hyperlinked throughout the lesson. • contradiction • identity • solution MATERIALS • reference Guide pages 80–87 • Practice Activity Book pages 52–55 • Overview and Toolkit presentations STr ANGe SOLuTiONS 109

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