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Wednesday 8.28.13

Directions : Please come in and get your journal. Skip 2 pages (front and back is 1 page). On the front side of the 3 rd page, write today’s date on the top line. Below the date, write the Challenge Question. Wednesday 8.28.13.

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Wednesday 8.28.13

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  1. Directions: Please come in and get your journal. Skip 2 pages (front and back is 1 page). On the front side of the 3rd page, write today’s date on the top line. Below the date, write the Challenge Question. Wednesday 8.28.13 Challenge Question: What math symbols do you know and how do they benefit you? Warm-up (independent, level 0 noise): You have 20 feet of fencing and you want to build a dog kennel that is a perfect square. What will the side lengths be? Please complete this in your journal below the CQ

  2. Vocabulary words • Discuss the following math vocabulary with your group for 2 minutes. What does each word mean and how can we evaluate it? • Side length • Perimeter • Area • Perfect square

  3. Our Dog Kennel Side length = 5 ft. Perimeter = 20 ft. Area = 25 ft² Perfect square = Yes!!

  4. Squares and Square Roots • Square Root: A number that produces a specified quantity when multiplied by itself. Example: 8² = 64 Why doesn’t 8² = 16? Discuss with your group for one minute.

  5. Exponents 7² 4³ What is an exponent? • A quantity (or number) representing the power to which a given number is to be raised. What are some examples of exponents? • 2² = 4 • 3² = 9 • 4² = ? • 5² = ? • 6² = 36 • 2³ = 8 • 3³ = ? • 4³ = 64 • 5³ = ? • 6³ = 216 What are these called?

  6. Rational vs. Irrational numbers

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