Showing posts with label lara817. Show all posts
Showing posts with label lara817. Show all posts

Multiplying Fractions

Thursday, April 30, 2009

Pythagoras !

Wednesday, February 25, 2009
This week, we were assigned to make a blog post about the Pythagoras Theorum and Pythagoras himself. Plus define a few words.

Pythagoras was one of the most greatest genuises ever lived. He was an uber smart mathmatician and philosopher. Pythagoras was from Greek, but we are not 100% sure that Pythagoras actually existed because he made no records.

Legs
The legs are the shorter parts of a triangle. The legs create the right angle of the triangle.

Hypotenuse
Hypotenuse is the longest side of a right triangle, it is the opposite side of the right angle.

R.A.T
R.A.T is just short for Right Angle Triangle.

Greek
A person born or living in ancient or modern Greek.

Theorem
A theory that can be proved.

The Pythagoras Theorem
Pythagoras created the Pythagoras Theorem. It is the sum of the areas of the 2 squares on the legs which is a and b, equals the area of the square on the hypotenuse(c).

Then we have to explain some artifacts that Mr.Harbeck posted for us. The first article is the picture above this. The picture represents the Pythagoras Theorem. The definition for it is above the picture.

This is the 2nd article.






This is a Right Triangle. It has a 90 degree angle, and all together it has 180 degrees.This triangle is also known for a R.A.T.How do you know when it's a right angle ? Well, if it has a little square in the corner, then it means it is a 90 degree angle.



(no picture because everytime i clicked the picture icon, it would freeze.)

Well, the picture is sopposed to be a simple square. A square has 4 right angles which is 90 degrees each, and all together it would equal 360.

(no picture because everytime I clicked
the picture icon ..it would FREEZE)



(I could not get the rest of the post done because the computer at home was super slow:( )

Our next assignment was to make a video on how to solve the problem's on the videos.

This is the video I made with Kim C. and Courtney.

2nd Video:

Pay It Forward

Monday, January 5, 2009
What I did to Pay It Forward
Over the Christmas Break, I decided to donate some glasses to the African kids. It all started a few days before Christmas day, I went with my mom to her work. In her office, there was a box with tons of prescription glasses in it. I asked my mom why they were in the box and she tld me they were for the kids in Africa who need glasses. When I got home, I thought about my Pay It Forward and searched my house for some glasses that my brother or parents don't use anymore. The next day, I went with mom again to her work, and put 2 from my brother and 2 from my parents! While I was there, I met some of my mom's friends and told them that I donated glasses and they should pay it forward too. ONE person CAN make a difference. In a few weeks, the box of glasses will be shipped to the kids in Africa who need them the most.

Great Big Book Of Algebra ! (Ch.2)

Wednesday, December 17, 2008
CHAPTER 2
Lara-Hello Jackie ! How's it going ?
Jackie-I'm doing good ! And You ?
Lara-Oh man ! I had soo much fun at school today !
Jackie-Really? Why was it soo fun ?
Lara-Because we learned about Algebra ! Didn't you take that in school today ?
Jackie-..I don't know.. I don't pay attention in school..
Lara-Wow.. Im disappointed..
Lara-Well, anyways.. I should teach you , it is quite fun to do !
Jackie- Okay.. fine! But I hope it is fun ..
Lara- Oh don't worry it will !
Lara-Okay, our first question is n+3-5n+12 !
Jackie-Okay let me think... hhmmm..
Jackie-well.. I think it is 6n+15 !
Lara- Haha , nice try Jackie , you were very close ! You see , -5 + n = -4 and 3 + 12 =15 .. so the answer would be -4n+15 !
Jackie- oh .. wow you really know your math huh ?
Lara-yes I do !
Lara-Okay let's do another question !
Jackie-Fine, fine !
Lara-alright, what is 2+4(3n+8)?
Jackie- uhm .. Isn't 12n+10 ?
Lara-Nice try.. again.
Jackie-*sigh*
Lara- What you would do is ,4 times 3n is 12n. Then 4 times 8 is 32. 12 and 32,bring 2+ which is now 2+12n+32, then add 2+32 is 34. So now the question is, 12n+34 !
Jackie- WOW ! Very good Lara ! Thanks alot for helping me out.. Next math class I'll sure pay attenton thanks to you !


CHAPTER 3:

Here are my pictures to explain how to solve additive, subtractive, multiplicative, and divisive algebra questions !

1) Additive










2) Subtractive













3)Multiplicative














4) Divisive











Alright ! That's all ! (:

The Great Big Book Of Algebra !

Friday, December 5, 2008
Adding Integers (Free Verse)
There was once a boy who did not know how to add,
So the boy asked his dad,
and his dad said, "go to school son!"
So, the boy went to school,
and he thought it was cool!

Subtracting Integers (Cinquain)
Subtraction
Negatives,differences
Reducing,diminishing,subtracting
Taking away the numbers
Terminator

The Rule for Multiplying Integers (Tanka)
Multiplication
is doubled by some numbers
Expecting no fruits
Except for a cucumber
Multiples of cucumbers!

Partative Division (Free Verse)
How many equal parts are in 4 when you have 12?
Gee, if you look at your barn you'll have an answer!
And if you find out, I'm sure you'll become a great dancer!

Quotative Division (Haiku)
Division is hard
But if you are going to school,
It should be as cake!

Scribe post for Nov.26

Wednesday, November 26, 2008
Hey guys ! Today in class we did a QUIZ!

We had 10 questions as usual, and we had 20 minutes to do them.
Our first question was..




As we all should know , -3+(-5)=-8 and (-8)-(11)= ----->-19<-----

2)



Now, (5)(-4)=-20 & (-2)(-1)=(2)(-6)=-12
(-12)+(-20)=---->-32<-----

3)



6(-2)= -12 & (-3)(1)=-3
(-12)(-3)=36 & -3(3)=-9
(36)/(-9)=---->-4<-------

4)





(-5+19)= 14 & 6(-1)=-6

(14)+(-6)=8

8/-4=---->-2<-------

Well, I guess that is it because Mr. Harbeck told me to do the first 4 questions! (:
Anyways.. yeeaah, BYE & comment like crazy!
Oh right , and the scribe for monday is .. KEVIN ! haha. >x)

The Contest (Part 2)

Sunday, November 2, 2008
Part 2 (continued)


The judge called the number 30, It was me

"Guys, It's me!" I said, pointing at the number on my shirt.

"We'll... Good luck!" Karen and Joysie said.

I walked up to the front of the stage, I kept thinking, what if I went wrong ? We would lose the money and the prizes plus I would let my friends down. But I couldn't, I knew I could do this.


"Number 30, we need you to answer two questions and tell us how you did it please." The judge said as if she's been saying it all morning.

"Okay." i said leaning in front of me for the microphone.

"What is the answer for negative twenty-two minus negative ten?"

I knew this question, It was pretty simple. I imagined this picture-

(-22)-(-10)=?

Mr.Harbeck told us about changing the negative into a positive like this-

(-22)+(+10)=?

Now, twenty-two minus 10 equals twelve.. so the answer should be negative twelve!

"The answer is negative twelve, and I got that answer by changing the negatives into positives and adding them."

"Correct, now the next question." She said reading the papers on her desk. " What is the answer for positive two minus negative ten plus positive ten?"

She imagined a picture like this-

(+2)-(-10)+(+10)=?

Now, I would have to deal with the first 2 numbers, and then change the negatives into a positive.

(+2)+(+10)+(+10)=?

(+2)+(+10)=+12

Now, add the remaining integer with the positive twelve.

(+12)+(+10)=+22

The answer is twenty-two!

"Then answer is twenty-two, and I got that by first changing the negatives into positives and then adding the first two numbers which would equal positive twelve, and then add the remaining integer."

"Correct!" The Judge said."You can go now."

I walked back to my chair, my heart beating fast.

Joysie and Karen were both smiling.

"Yaay!" Joysie said happily.

"Soon it will be your turn Karen." I said as I sat down.

"I know." Karen said worried.

I was looking at the crowd and the other kids around me until i stopped and stared at this one girl. Could it be? I thought.

The girl turned around. It was Elmane.

Scribe post for october 30

Thursday, October 30, 2008
Hey guys, the first thing we did in class was the 10 question integer quiz, then we started a new unit book, but that doesnt mean were done with the yellow one, we'll come back to it later.



Integers

AKA

No more training PANTS


Green book-1st pg. ( Mr.H asked to do the first 3 questions )



1) 6+8=14


2)-4-3=-7


3) 15-2=13


In standard form we combine integers.


For 3) just imagine it like this--> (+15)+(-2)=13

Have 15, Owe 2 =13

By the way if you have noticed, THERE IS NO AND!



So, Mr.H told us to do it like this -> 15-2=+13



WELL.. I think that's it because i cant think of anything else to put on this soo, yeaah . Buh-Byee! (:


















The Integer Contest

Friday, October 24, 2008


Me, Joysie, and Karen entered the Integer contest. We all went to the same school, and were in the same class. We decided to enter the integer contest so we could win some prizes and money.

We entered the building together, there was a lady at the back of a table with a list of names. She asked us our names, told us to put a paper with numbers, 7, 25, and 30 and told us to go down the hall until you reached a door with steps going up. When we got up the stairs, we saw a big stage full of chairs, and a microphone stand at the front. We all looked at each other, we weren't expecting this, it looked like some sort of spelling bee contest. There was also a lady in the door to the stage, holding a list of names. She asked us our numbers which was on the front of our shirt and told us to sit on the chairs. We then decided to sit on some chairs on the corner of the stage. We could see lots of other kids around, lots of them looked smart. There was a woman and two men behind a table at the very front, we thought were the judges.
While we waited ti'll the show would start, we studied and practiced our integer problems from math class. About 20 minutes later we noticed there were many more people sitting in chairs than before. The lights turned on and faced the stage, making us blink and put our hands on our eyes.
" Ladies and gentlemen, the show is about to start, please stand up for the national anthom." One of the judges said into the microphone.
" Wow, we have to stand up for the national anthom? It's just a contest." Karen whispered as she stood up.
After the national anthom, we sat down. The show started, and the judge started calling different numbers to come up and answer some questions. After a few people went, the judge said number 7 to come up.
"It's ME! Guys It's ME !" Joysie said.
"We'll go on!" we both said.
She stood and started to walk to the front of the stage, when she got there, she looked back at us with a nervous look on her face.
We both raised up our thumbs and smiled a 'good-luck' smile.
" Are you ready?" One of the judges said.
" Y-yes." Joysie said.
"Alright, answer the following questions and tell us how you did it." Said the judge,"positive twenty-eight plus negative twenty-four."
Joysie's mind raced, she thought if that day in math class, the teacher telling the class about I have and I owe. She thought, I have twenty-eight dollars and owe twenty-four. She imagined this picture-She thought, twenty-eight minus twenty-four is 4, it should be positive 4.

"Positive four." She said.
"Correct!" The judge as she got closer to the microphone.
" Next question, positive seven plus positive nine plus negative two."

She thought the same, but this question was different. She knew how to do this,
first she would take the group of positives and add them together which would make sixteen, now add negative two to it which would make positive fourteen. She imagined this picture-
"The answer is positive fourteen!" Her voice was louder than last answer, she felt more comfortable.
"Correct!" Said the judge. "You may go now."

Joysie left the front of the stage to sit with her friends again.

"I knew you could do it!" I whispered.
"Me too." Karen whispered after me.

After lots of kids went, the judge went on to call number 25.
It was MY turn now.


END OF PART 1.































Lara's Measures of Central Tendency, mmm

Tuesday, September 30, 2008
MEAN!
-arrange data in ascending order
-the sum of all data










MEDIAN!
-great to use if there is an outlier
-Find middle number
-data must be arranged in numerical order
-if there are 2 middle numbers,you find the mean of them

















MODE!
-Find the most common number in the set of data
-arrange data in ascending order
-you can have more then one mode or you can have no mode








RANGE!
-arrange the data in ascending order
-subtract the smallest data from the largest data
-Large Range=Outlier




Here is a video i found on mean, median, and mode !












Subscribe to: Posts (Atom)