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FLORIDA Pre-Algebra Teacher’s Guide Vol. A

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LESSON GOALS • Evaluate a numerical expression that includes a negative integer exponent. FLORIDA STANDARDS • MAFS.8.EE.1.1 Know and apply the properties of integer exponents to generate equivalent numerical expressions. PACING One class period, approximately 60 minutes LEARN MATHCAST: NEGATIVE EXPONENTS This MathCast video begins by relating the decreasing pattern of a knitted shawl to that of negative exponents. The pattern students learned for positive exponents is extended to negative exponents. The video introduces students to a general rule for negative exponents by pointing out that they could have made the exponent positive and moved it to the denominator. KEYWORDS Students can preview definitions of keywords hyperlinked throughout the lesson. • base • exponent • power MATERIALS • Reference guide pages 19−22 • practice Activity Book pages 10−11 • Overview and Toolkit presentations Use this guide to accompany Lesson 1.06, Semester A. Negative Exponents 24 NEgATIvE ExpONENTS

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