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Math 8 Chapter 1 Lesson 1 page 7
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Page 7 Essential Question: Why is it helpful to write numbers in different ways? Common Core State Standards: 8.NS.1 Mathematical Practices: 1,3,4,6,7,8 I can write rational numbers as decimals and decimals as fractions Without Calculators
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Engage Vocabulary Notes
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VocabularyWordsSymbolsModel Rational NumberA rational number is a number that can be written as the ratio of two integers in which the denominator is not zero. a/b, where a and b are integers and b≠ 0 Examples Repeating DecimalA decimal whose digits repeat in groups of one or more. 0.181818… Terminating Decimal A decimal whose digits end. 0.2 -1.345 11/20 = 0.55
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Notes Rational Numbers come from the root word “RATIO” or numbers that can be written as a comparison of two integers. Fractions (ratios) are rational numbers. Decimals that end or repeat can be written as fractions and are rational numbers.
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Explore/Explain Chart Internet Activity Fraction/Decimal/Percent
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Examples - Complete NumberDecimalFractionRational or Not Rational 19% 3/4 0.32 3 1/11.625 - 1 2/3 -2/9 0.45 -0.777…
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Elaborate Guided Practice
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Guided Practice page 10 ODD Problems and Answers
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Guided Practice Page 10
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Guided Practice page 10 EVEN Answers
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Guided Practice Page 10 - Even 2. -1.725 4. 0.438 6. - 7/9
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Explore/Explain Got It Problems
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Got it A-D Problems page 8 Convert to decimals A. ¾ B. -2/9 C. 4 13/25 D. 3 1/11
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Got it A-D Answers page 8 A. ¾ =.75 B. -2/9 = -0.222… C. 4 13/25 = 4.52 D. 3 1/11 = 3.090909…
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Got It E Problem page 9 In a recent season, NASCAR driver Jimmie Johnson won 6 of the 36 total races held. To the nearest thousandth, find the part of races he won.
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Got it E Answer page 9
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Got it F-G Problems pg 10 Convert to fractions or mixed numbers in simplest form. F. -0.14 G. 0.272727…
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Got it F-G Answers pg 10
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Evaluate Classwork Activities
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Classwork 1. How Does It Fit (HDIF) –How Does It Fit (HDIF) Card Stock (30 sets different colors) 2. Find Someone WhoFind Someone Who Grade/Collect 3. Extra Practice pgs 13-14 HDIF (20 problems – 20 minute) Exchange and grade 4. Worksheets PreAlgw/pizzaz pg 81 5. Foldable – File in FolderFoldable Another Example 6. Rational Number App TIRational Number App TI
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Homework – Independent Practice pages 11-12
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