Wednesday, January 11, 2012

Wednesday, January 11th

Sixth Grade

Several students relaly struggled on the quiz yesterday, so today we spent time going over the quiz and analyzing the mistakes. The class will have a makeup quiz tomorrow and I will record the grade of whichever quiz has the highest grade.


Seventh Grade

Math - Today we talked about percents less than 1%. It was a little hard to understand just what it meant, but I think everyone started to grasp the concept. There is no homework! We will continue talking about very small percents as well as percents greater than 100 tomorrow.

Geography - Decision Making Skills - this is at the end of Chapter 10. Be sure to come up with a problem or situation in which you'd need to make a decision. Follow the steps for making a good decision. Also, the test over Chapter 10 is tomorrow! Be sure to study...and don't forget to know the 5 steps of the decision making process.


Eighth Grade

Pre-Algebra - Ratio and Proportion Word Problems. Everyone was doing really well today! If you have questions, send me an email.

Algebra I - Adding and Subtracting Polynomials.

Remember, to add polynomials, just drop the parentheses and combine like terms. If you need to subtract, or if there is a negative sign in front of one of the parentheses, then you need to first distribute the negative sign by changing all the signs in the parentheses after the subtraction/negative sign.

Here is an example:(4x + 5y - 15z) - (20x + 14y - 12z)

Here, you would just drop the first set of parentheses and distribute the second negative sign:

4x + 5y - 15z - 20x -14y + 12z

Notice that all the terms from the second parentheses have opposite signs. Then combine the like terms:

-16x -9y - 3z

Remember, though, that you must write the answers in descending order of the variable. The above examples do not have exponents, but you must write your answers so that the terms are ordered with the highest degree term first and descending from there.

As always, email me if you are stuck!

See you tomorrow,
Mrs. Swickey