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Welcome to 8th Grade Math: Understanding Rational Numbers and Equivalencies

Join Mr. Keith Jenkins in Room 222 as we dive into 8th-grade math concepts. This week's focus includes essential vocabulary like ascending, descending, integer, rational number, and equivalence. Learn how to visualize and verify equivalencies between fractions, decimals, and percentages through engaging strategies. Participate in warm-up challenges such as subtracting numbers and understanding volume through real-world problems. Group activities on equivalent representations will enhance your collaboration and understanding. Let’s make math fun and interactive!

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Welcome to 8th Grade Math: Understanding Rational Numbers and Equivalencies

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Presentation Transcript

  1. Welcome to 8th Grade Math!! Mr. Keith Jenkins Room 222 (check your schedule)

  2. Vocabulary • Ascending: • Descending: • Integer: • Rational number: • Equivalence:

  3. Vocabulary • Ascending: increasing in size • Descending: decreasing in size • Integer: whole numbers (positive & negative) • Rational number: can be expressed as a quotient of two integers • Equivalence: a state of being essentially equal or equivalent

  4. Math Warm-up • How many times can you subtract the number 5 from 25?

  5. Math Warm-up • How many cubic meters of dirt are in a hole 6 meters long, 2 meters wide, and one meter deep? 8-1

  6. Index Cards • Find the person with your equivalent representation. Form a group. • Finish the Relating Rational Numbers handout

  7. Strategies • What strategy can you use to verify a fraction is equivalent to a percent? • What strategy can you use to verify a decimal is equivalent to a percent? • What strategy can you use to verify a percent is equivalent to a fraction? • What strategy can you use to verify a percent is equivalent to a decimal?

  8. Visual Strategy Strategy Strategy Strategy

  9. Questions • What 2 consecutive integers is your rational number between? • Name a rational number greater then your rational number. • Name a rational number less than your rational number

  10. Relating Rationals Handout • What strategy can you use to write a fraction as a percent? • What strategy can you use to write a decimal as a percent? • What strategy can you use to write a percent as a fraction? • What strategy can you use to write a percent as a decimal?

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