Monday, 11/4/2013

Monday, 11/4/2013AA.12 - Transform powers with negative exponents into positive exponentsThe story: How Ashley and Javiers understanding of this concept will help solve this past Regents problem:

Ashley said: I dont 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. Its hard when they have variables like x.Thursday, October 31, 2013

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

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Wait!? Then what happens when the power has variables?

Ashley asked, What number is x?

Javier came to rescue!Javier commented, x is a variable. It can be any number. It didnt say. So its just x.

When there is a NEGATIVE exponent Rewrite with a POSITIVE exponent

Ashley & Javiers Rule

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- Keep the parts with positive exponents on top (called the numerator). 2- Write the parts with negative exponents on the bottom (called the denominator). x2Our Take Away

11. Recall Ashley and Javiers Rule- 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 others help to solve the challenge.When with NEGATIVE exponent Rewrite with POSITIVE exponent

Applying Ashley/Javiers Rule & Erics Rule to solve Regents Question

= Erics RuleAshley & Javiers Rule= 5x6-8y2-1= 5 x-2y11