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Monday, 11/4/2013

Monday, 11/4/2013. AA.12 - Transform powers with negative exponents into positive exponents. The story: How Ashley and Javier’s understanding of this concept will help solve this past Regents problem:. Thursday, October 31, 2013.

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Monday, 11/4/2013

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  1. Monday, 11/4/2013

  2. AA.12 - Transform powers with negative exponents into positive exponents The story: How Ashley and Javier’s understanding of this concept will help solve this past Regents problem:

  3. Thursday, October 31, 2013 Ashley said: “I don’t know how to do problems when they have negative exponents.” Ms. Wang responded, “You mean a question like this?” Ashley replied, “No, I know this. It’s hard when they have variables like x.”

  4. Ashley understands how to transform negative exponents into positive exponents when there are only numbers. When there is a NEGATIVE exponent Rewrite with a POSITIVE exponent 1 1

  5. Wait!? Then what happens when the power has variables?Ashley asked, “What number is x?”

  6. Javier came to rescue! Javier commented, “x is a variable. It can be any number. It didn’t say. So it’s just x.” When there is a NEGATIVE exponent Rewrite with a POSITIVE exponent

  7. Ashley & Javier’s Rule - Keep the parts with positive exponents on top (called the numerator). 2 - Write the parts with negative exponents on the bottom (called the denominator). x2 1

  8. Our Take Away 1. Recall Ashley and Javier’s Rule When with NEGATIVE exponent Rewrite with POSITIVE exponent 1 - Write the part with positive exponent on the top (numerator). - Write the part with negative exponent on the bottom denominator. 2. Ashley and Javier were being resourceful, when they seek out each other’s help to solve the challenge.

  9. Applying Ashley/Javier’s Rule & Eric’s Rule to solve Regents Question = 5x6-8y2-1 = 5 x-2y1 Eric’s Rule 1 Ashley & Javier’s Rule =

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