## Thursday, January 31, 2008

### Fractals

OK, so for a while I have been making these on my computer, and you might have seen them up in the classroom. They are called fractals, and they are all about math. All they are are graphs of some basic equations. The difference between these and ones you do, is that a computer plots about 2,000,000,000,000 points and then colors them based on how fast they move. When the computer is done, we are left with a lovely picture. Here are two, and I might post more later.

### Exponents

Be sure you finish both sides of the worksheet you got today. There are some difficult problems on the page, and here are a couple of them

4x-2 is equal to the fraction 4/x2.

or the equations that look like (32)2 = (32)x(32) = 34

## Wednesday, January 30, 2008

### Fractals and Homework

Homework for 1/30/08
Page 301 #10 - 31

When multiplying terms with exponents, add the exponents. When doing division, subtract the exponents.

I am trying to put some pictures up of the fractals I made in class. Will post in a few minutes.

## Tuesday, January 29, 2008

### Interest Work

Todays homework is on page 387 #1-5 and #8-13. Remember the interest you find is just for 1 month. If the problem asks you for 4 months, then you have to multiply your answer by 4.

Also, do not forget that you need to tell me how much is in the bank account after the interest is calculated.

Total in account = total Interest + Money you started with in the bank

## Monday, January 28, 2008

### Car Prices

For the cars, finding interest is like finding percent. The only thing extra is you have to multiply by the number of years at the end.

## Tuesday, January 22, 2008

### Scientific Notation

Scientific Notation, some examples

120,000,000,000 = 1.2 x 10^11 (^ means "to the power of")

350,000,000 = 3.5 x 10^8

0.0000000091 = 9.1 x 10^(-9)

0.000004 = 4 x 10^(-6)

Homework today is page 311, #15-30

## Wednesday, January 16, 2008

### How you spend your day

Today, for homework, you are supposed to list the activities you do on the weekend and on Christmas.

Weekend:
How much time do you spend eating, sleeping, playing, watching tv, playing on the computer.... remember all times are in hours and add up to 24

Christmas:
How much time do you spend sleeping, eating, opening presents, playing video games, watching tv, playing football...

Please remember to bring them tommorrow so we can finish our pamphlets.

## Wednesday, January 9, 2008

### IS/OF

Its hard to do fractions with this website. But, remember that

IS/OF = %/100

So, to find 10% of 300

x/300 = 10/100

Cross multiply and get 3000 = 100x

Homework tonight is page 285, numbers 10-21. Solve them using the equation.

## Monday, January 7, 2008

### Percent word problems

Percent word problems were solved today. If you need help:

"IS" divided by "OF" then, times 100 = percent

What percent of 10 is 5?

"5" divided by "10" x 100 = 50%

## Wednesday, January 2, 2008

### A New Year

Being a new year, I thought you should have some more random things to do in the last few days before you go back.