Scribe Post for January 7, 2010

Hello 9-05 ! So today we started Chapter 3.2: Exponent Laws. Mr. Backe helped us with some stuff we didn't understand in our homework yesterday:

• Read page 99 to 104
• Answer Explore Operations on powers, Reflect and Check, Check Your Understanding- page 105, and all Show You Knows-page 101, 102, 103 and 104.

In class, we wrote notes in our foldables.







































We wrote notes in the middle where it says Exponent Laws and Key Words.

FIRST FLAP:



The Product Law:
When multiplying powers of the same base, simply add the exponents to find the product
example:


We also had to put not examples, exponents with different bases:


SECOND FLAP:



The Quotient Law:
When dividing powers of the same base, simply subtract the exponent to find the quotient.
example:


We also had to put not examples, exponents with different bases:

THIRD FLAP:


The Power of a Power Law:
When raising a power by a power, simply multiply the exponents to find the new power.
example:


WHY? it's because this question means to multiply 5 x 5 3 more times.

FOURTH FLAP:


Power of a Product Law:
When a product is raised to an exponent, you can rewrite each number in the product with the same exponent.
example:

FIFTH FLAP:


Power of the Quotient Law:
When a quotient is raised to an exponent, you can rewrite each number in the quotient with the same exponent.
example:


SIXTH FLAP:


The Zero Exponent Law:
When the exponent of a power is 0. The value of the power is 1 if the base is not equal to 0.
example:


WHY? It is 1 and a positive even though the base is a negative because it fits the pattern. Watch...



See what's happening? This reminds me of the rule about multiplying and dividing integers:

*When multiplying or dividing variables, if there's an even amount of positive or negative numbers the answer will be a positive.

*When multiplying or dividing variables, if there's an odd amount of positive or negative numbers the answer will be a negative.


Homework:

• Practise, Apply and Extend - Odd or Even numbers.
• 3.2 Extra Practice
• 3.2 Workbook
• Fill in definitions and examples for 3 point approach and foldable so you're caught up with everything
• Self Assessment for 3.1 and 3.2 since we're done both
• JOURNAL
  
• also try to figure out definition of Exponent Law of 1, Negative Exponent Law, Base of 1 Law if you have time (:

Extra Info you guys may need in case it pops up in the homework:
Negative Exponents: I think it's the same as Negative Exponent Law..I'm not sure.


If a positive exponent means how many times you multiply the base by itself, a negative exponent means how many times you divide the base by itself.


Please comment and tell me what you think, point out my errors and things I could improve on (: