New Blog!

Hey guys! I got a new blog! This name was too long. Keep up with us at:

http://landrumswag.blogspot.com/

Miss all of you and hope 8th grade is going well! --Ms. Cook

Perfect Squares and Square Roots

This concept is going to be really important as we move into working with 2 and 3D figures! Remember that "squaring" something is the same thing as taking it to the second power. What that means is that you take a nubmer and multiply it by itself twice. The answer you get when you square a number is called a PERFECT SQUARE. Here are some examples and practice on squaring things.

So, what is 3²??

3 × 3 = 9

So the perfect square is 9.


So what is 9 sqaured?

9 x 9 = 81

So the perfect square is 81. 


Practice

	Expanded  _ •_	Perfect Square	Square Root  √
22  squared
	13 x 13
		225
			17
	4 x 4

Square Roots
When you think of the radical sign, you should ask yourself, "What number multiplied by itself gives me the number under the radical sign?" Always be looking for the perfect squares!

Watch this video for help!

Go here for practice!



Imperfect Square Roots
If it isn't a perfect square, use estimation! Here are the steps:

1. Find the perfect squares the number under the radical is between
2. Take the square root of the perfect squares.
3. You have found the range of what your square root is!

Watch this for help!

Go here for practice!

Adding and Subtracting Integers

Hey students! Just wanted to do a short post with a few pointers for the integers homework! Remember when you are subtracting a negative, you have to take the opposite of it!

Ex:               4 - -2    ***put your parentheses
                   4 - (-2)
                        opposite of -2  is +2
                  4 + 2 (Model it!)
                   ++++
                   ++                          Answer: ___+6______

If you check the blog and does these problems correctly, you can get 5 extra credit points to your lowest grade! Good luck!

1.     -2 - (-4)

2.     -5 - 8

3.     3 - 9

4.     (-7) + (-6)

5.     -1 - -9

Getting ready to work with Integers!

I hope everyone enjoyed the 3 day weekend! I know that the STAAR Practice Writing was probably pretty stressful today, but I'm proud of you guys for pushing through! Only one more day of it then we return to a regular schedule. Remember that your graphing projects are due THURSDAY by 3:35!

Because it has been so long since I've seen most of you, I wanted to give you a preview of what we are about to move into. This is your homework that is due THURSDAY by the time you come to class!

Comparing and Ordering Integers

Compare. Write <, >, or = for each □.

***Remember < means less than and  > means greater than.

1. -7 □ +8 

2. -4 □ -1 

3. +10 □ 10

4. 0 □ -8 

5. -7 □ +3 

6. -8 □ -9

7. -7 □ +3 

8. 1 □ +1 

9. -6 □ 0

Order the numbers from least to greatest.

10. -6, -7, 2, -1 

_________ 

11. -8, 7, -10, 0 

_________ 

12. 5, 8, -9, -3

_________ 

Order the numbers from greatest to least.

13. 3, -4, 5, -6 

_________ 

14. 0, 5, -4, -8 

_________

15. -3, -2, -8, -10

_________

You can't make fun of me!

As promised, I made a remix to Beyonce's "Irreplacable." Because I made the video, you absolutely CANNOT make fun of how bad my voice is! Remember for the project today that you have to find the discount and tax for your item. Just a refresher on the steps of how to find the percent of a number!

Step 1- Remember "of" means MULTIPLY

Step 2- Convert your percent to a decimal (watch the video if you forgot how!)

Step 3- Multiply using decimal multiplication

Step 4- Move your decimal

Ms. Cook Sings to Beyonce's Song!

Hopefully this helps! Remember, YOUR PROJECT IS DUE ON MONDAY! If you want to take it home over the weekend to make it pretty/awesome, you can, but when Monday gets here, you will have to have it! Have a great weekend!