817 Math Blog

This is a video that I made with Mark's help.

2 Minutes To Make a Difference Global Warming



This video is about global warming and how it is affecting the earth, and the animals that are still around today. It also includes how it affects us here in Winnipeg. Enjoy!

Bibliography

Pictures

Burining trees -http://www.spusa.org/mindfull/wp-content/uploads/2006/11/800px-deerfire.jpg

First polar bear picture -http://animalkingdom.files.wordpress.com/2006/12/polar-bear1.jpg
Second polar bear picture -http://img.metro.co.uk/i/pix/2007/02/polarbears_450x300.jpg

Arctic Ocean -http://www.lanl.gov/news/1663/images/polar/1lg.jpg

Stop sign -http://firefighterclosecalls.com/images/600px-Stop_sign.gif

Red River -http://gsc.nrcan.gc.ca/floods/redriver/images/view1.jpg

Alpine glaciers -http://www.calstatela.edu/dept/geology/Glaciers/Jungfrau(2).jpg

Bike -http://uwadmnweb.uwyo.edu/oap/images/atlas%20bike.gif

Car -http://www.chevroncarsblog.com/images/photos/yellow-car_lg.jpg

Recycling bin -http://www.glynncounty.org/images/pages/N707/recycling%20bin.jpg

Packaged products -http://www.glynncounty.org/images/pages/N707/recycling%20bin.jpg

Music

"Be Ok" by Ingrid Michealson-I got this song off Lime Wire.

"

In this video it will show you what global warming is, and what damages it is doing to the earth. You will learn about what can cause it and what effects it has. Enjoy!

Pythagoras

Pythagoras is a really smart guy.
People don't really know if he existed or not because there is no evidence of him ever being alive.

The artifacts were the pythagorean theorom, a square, and the R.A.T.








From last Friday, and all of this week, we have been learning about Pythagroas, and his theroey named Pytagorean Theroem. His theory is that on a R.A.T ( right angle triangle) , you can find the hypotenuse (the longest side of the triangle right on the opposite side of the right angle) by using the the measuraments of the two legs ( the two legs are what make up the right angle in the triangle). To make this easier for you to understand, we will call the two legs a and b, and the hypotenuse c. The thoroem is a squared plus b squared equals c squared. For now, I am going to say that side a is 2cm and side b is 3cm. So, since we know what sid e a and b equal already, we can put it down in our equasion. Now the equasion says, 2 squared plus 3 squared equals c squared. Since we want to get rid of the exponents, we square the numbers to get, 4 plus 9 equals c squared. Now lets add the numbers together to get an equasion of 13 equals c squared. To finish things off, lets put square roots on both sides so we can get rid of the exponent on the c. Now we come up with an answer of 3.605. Below is the same example i have just told you but in picture.

Today in class we talked about what we are going to do for the quiz tomorrow. For the quiz, Mr. Harbeck is going to take some of the questions we did on our homework on page 43. We also corrected our homework from page 43, and 44. Today, our home work is page 46, and 45 in our purple book. On 46 we only have to do 6 questions, and on 45 we have to do E to W. Below you are going to see some examples of the kind of questions that you might see on the quiz tomorrow.

-The slashes that you see in the questions are dividing symbols.

1. -4y+16=4
-4y+16-16=4-16
-4y=-12
-4y/-4= -12/-4
y= 3

Vefification
-4y+16=4
-4(3)+16=4
-12+16=4
4=4

2. 3n+8=20
3n+8-8=20-8
3n/3 =12/3
n=4

Verification
3n+8=20
3(4)+8=20
12+8=20
20=20

3. -x/3+4=20
-x/3+4-4=20-4
(-3)-x/3=16(-3)
x=-48

Verification
-x/3+4=20
(-1)(-48)/3+4=20
16+4=20
20=20

4. -8t-23=41
-8t-23+23=41+23
-8t/-8=64/-8
t= -8

Verification
-8t-23=41
-8(-8)-23=41
64-23=41
41=41

Hi my name is Jai. Over the Christmas Break, I had to do an assignment called pay it forward. Pay it forward is an idea that sombodey had to improve people's lives. to complete this idea one person has to give an act of random kindness to 3 people. Then you will tell each of the 3 people that they have to the same thing that you did for them to 3 other people. The thing that inspired our teachers to even think of doing this is a movie called "Pay It Forward". All of the grade eights got to watch it on the last day before Christmas Break. In the end of the movie, it becomes sad because the kid who thought of pay it forward died when he was trying to help another kid in his class that gets bullied a lot. Below, you will see pictures of what I did for this assignment. It includes before and after pictures.

BEFORE











AFTER












To pay it forward I shoveled my grandma and grandpa's drive way. I decided on doing that because I slept over there. One more thing that I did for this assignment was give money to my uncle. Below, you will see the proof. The proof is a picture.










So now you see what I have done. Try this idea just for fun. Maybe you will see the beauty that we have created. If you carry on this thing we call pay it forward.

The Rule For Muliplying (Free Verse)

Multplying integers is easy if you know a rule.
Try it, try it! it will help you in school.
First look at your question. Don't be a fool.
Or else the only thing you'l do is sit there and droule.
Odd or even negative symbols is the key.
It's just like finding apples from a tree.
Don't get mixed up with an order of operation.
Or that will only lead to a wrong equation.
An odd amount of negative integers equals a negative product.
Now do the opposite for even and then you have got it!
One more thing that I have to say before I leave.
If you have no negative integers, a positive amswer you will reveive.

Partitive Division (Free Verse)

How many equal parts go into 4 groups?
Fill 8 karts, then group them with 4 loops.
It's just like 4 armies with only 2 troops.
Count each part in one group with your vision.
Now you have just done partitive division.

Quotative Divistion (Free Verse)

How many groups of 2 go into 4.
Draw 2 circles, than two more.
Fill those circles in so positive they will be.
That circle each group of two that you see.
Count each group just like counting each prision.
Now you have just done quotative division.

Adding Integers (Haiku)

Very nice and kind.
I am not blind, I don't mind.
Adding integers.

Subtracting Integers (Cinquan)

Subtract,
Does not exist.
Takes everything away.
Makes you feel sad because you lost.
Reduce.

Chapter 2 Combining Like Terms and Distributive Property

Hi Chicken what did you do today. Oh hi Santa, I just went to school. What did you do at school. First I had a math test. Then I had snack time. After snack time we had a science test. On the test, I got 1000 percent. Then we had nap time. Hold on. You never said anything about the your math test is there something wrong? No, it is just that i got two questions wrong on the test. I don't know what I did wrong. Can you help me. Okay! Tell me the first question that you had trouble on and explain what you did. Okay. The question is n+3-5n+12. The first thing that I did was add the two n variables to get an answer of 6n. Next I added the 3 and the 12 together to get an answer of 15. Then I brought the two answers that I got and put the subtracting sign in between them. This is where you went wrong. Instead of including the negative sign with the 5n, you counted it as an order of operation. To solve this question, the first thing that you do is circle all of the variables that you see including the positive or negative symbol with you variable. Next you have to add the variables together that match eachother. If you see an uh oh, just add the opposite. What is an uh oh. An uh oh is when a variable is subtracting a negative variable. What is the other question that you were having trouble in. The question was 2+4(3n+8). The answer that I got was 12n+10. The first thing that I did was multiply the 4 with the 3n to get an answer of 12n. The next thing that I did was add the 2 and the eight together to get an answer of 10. Then I brought down the two answers that I got and put an addition sign in between them. Here is where you went wrong. Instead of multiplying both of the numbers in the brackets then adding the 2 with the answer that you got that has the same variable as that one, you just multiplied one of the numbers in the brackets with the 4 and then adding the 2 with the other number that has the same variable as that one. Thanks Santa, now I know that on the next test that I get on math, I will for sure get 1000 percent.

This is my movie below:



Chapter 3

Multiplicitive












-In the brackets it is a 3 and it says n=3 not 9


Division















Addition















Subtraction















Chapter 4

Today in class we talked about multiplying integers again. But instead of adding more things to our booklet with two sides on it, we were assigned to do some practice on it. For our practice, we had to page five, questions one to twelve, and what patterns we see on questions thirteen and fourteen. We also had to pick four questions out of the 12 questions that we had to do and draw a diagram to support our answer. Then we were asked to make a rule on what the product will be when we multiply certain integers together. It kind of looked like this....

Make a rule!

When I multiply.....

1.(-)(-)= 5.(+)(-)=

2.(-)(-)(-)= 6.(+)(-)(-)=

3.(-)(-)(-)(-)= 7 .(+)(-)(-)(-)(-)=

4.(-)(-)(-)(-)(-)=

If you can't figure out what it is these are the answers.

1. +
2. -
3. +
4. -
5. +
6. +
7. -

These are some of the questions and answers for the questions in the green booklet.

1. (3)(9)=27

This question equals to this answer because the answer is just simply saying what is 3 times nine.

2. (-11)(4)= (-44)

This question equals to this answer because a negative times a positive always equals a negative product. So the first thing you do is multiply eleven and 4 together and then change that answer into a negative answer.

3. (-4)(-12)=48

This question equals to this answer because a negative multiplied by a negative will always become a positive product. The first thing that you do to solve this question is change the negative integers into a positive integer and then multiply.

4. (8)(-8)=(-64)

This question equals to this answer because when you multiply a positive integer to a negative you will alwaysd get a negative product. To solve this question all you have to do is what i said in question 2.

5. (6)(-2)=(-12)

This question equals to this answer because of what i said in question 4.

Once upon a time, there was a guy named Marker. This guy was no ordinary guy. He was a kind of person that was rich. The only reason why he was rich was because his mom and dad were king and queen. Since he was a prince, he didn’t have to go to school.
One day, something terrible happened. His castle got destroyed. After his castle got destroyed, the only one that survived was Marker. Marker didn’t know what to do, until he found a leprechaun. When he saw the leprechaun, he followed it. Later on the leprechaun stopped walking. The leprechaun then did a magic spell that made a rainbow. The leprechaun spotted Marker, and then asked Marker if he needed any help. Marker then told the leprechaun that he needed one wish from him. He asked the leprechaun if he could make the castle and his family back. The leprechaun told Marker that he would only let Marker have his wish, if he passed a test. For the test, the leprechaun turned Marker into a marker, and then told Marker to answer 4 math questions. There was only one problem. Marker never went to school. So that means he wouldn’t know any of the math questions that the leprechaun asked him. Since he never went to school, the leprechaun sent Marker to a school and told him that after he graduated school, he would then give him the questions.
When marker finally graduated school, the leprechaun turned Marker into a marker, and then asked him his first question. His first question was, (-7) + (-23) + (+98) + (+2). When Marker saw the question, the first thing that popped into his head was to group like terms. Since he knew to simplify the question, the question became easier to answer. When he simplified the question, this was his question. (-30)+ (+100). Marker was about to put an answer wrong. He was going to put that his answer was (-130). He forgot that when adding a positive number to a negative, you have to take the positive number and subtract it from the negative number. Before he wrote his answer down, he used a number line to help him. Since he used a number line, Marker fixed his mistake, and then got the right answer. His next question was a word problem. His word problem sounded like this. If you had $100, then you earned $50, then spent $32, and spent another$55, how much money would you have? The first thing that Marker did when he saw that question was make it into a math question. He put (+100) + (+50) + (-32) + (-50). After he made it into a math question, he simplified it. When he simplified it, he got (+150) + (-82). His answer at first was (+68). Even though that answer sounds right, it’s wrong. The thing that he forgot about was that he had to change his answer from a math question, into a normal question. But since he checked his answer before putting it down, he got the question right. His next question sounds easy but it is not. His next question was (+9) + (-9). The hard part about this question was that he had to identify what kind of integer his answer was. His answer was right, but now he has to do the other part of the question. For the second part of his question, he had to know what the word was called when something is not positive or negative. To remember that question, he thought back to when he was in school in science class. When he was in science class he remembered that he had to do a project that he had to do at home. His project was called the neutral floating device. Now he knew the second part of his question. His answer was that 0 was a neutral integer. His last question was the hardest out of all his other questions. His last question was (-273)+(+78)+(12)+(-987)+(-6)+(-456). For this question the leprechaun let Marker use a calculator. The mistake that he made this time was that he forgot that to group like terms. But before he put the answer down, he ate a banana. After he finished eating, he just remembered about grouping like terms. The only reason that he forgot about grouping like terms is because he was only thinking about how hungry he was. His answer was (-1632).
Finally, he answered all of the questions right. After he was done answering all of the questions, he got his wish from the leprechaun. After he got his wish, he had his house, and his family back, with something extra. He had an extra smarts. But then something terrible happened.

Today in class we talked about grouping like terms when doing a question that has more than one of that kind of number. Grouping like terms is another way of saying simplify. An example of that is if your question asks you what positive 3, plus positive 5, plus negative 8, and plus negative 10. To make this question easier, you add the two positive numbers together, and add the two negative numbers together to get only one positive and negative number. So the question now would be what positeve 8, and plus negative 18 be. Below will be 5 questions from today's homework.

1. The temperature starts at -25 degrees C, drops 33 degrees C, rises 3 degrees C, and rises 8 degrees C.

(-25)+(-13)+(+3)+(+8)=
(-38)+(+11)= 27 degrees C

2. A person starts with $350, earns $122, spends $155, earns $183, and spends $29.

(+350)+(+122)+(-115)+(+183)+(-29)=
(+655)+(-144)= $511

3. Gloria is 52 kg. She gains 5 kg, loses 7 kg, gains 9 kg, and loses 14 kg.
(+52)+(+5)+(-7)+(+9)+(-14)+
(+66)+(-21)= 45 kg

4. The temperature starts at 32 degrees C, drops 8 degrees C, drops 3 degrees C, and drops 12 degrees C.
(+32)+(-8)+(-3)+(-12)=
(+32)+(-23)= 9 degrees C

5. A submarine starts at sea level, dives down 135 m, dives another 77 m, and rises 72 m.
(0)+(-135)+(-77)+(+72)=
(-212)+(+72)= -240 m

Mean

• Arrange data in ascendeing numerical order.


• Divide the sum of all of the numbers in that set of data by how many numbers there are.
  
• With an outlier less accurate..

Median

• Arrange data in ascending numerical order.
  
• Find the middle number by crossing of the end numbers until you have one or two numbers left.
  
• If you have two numbers left, add both of those numbers together and then divide that number by two.


• If you have one more number left, you have got your median.
  
• Great to use if there is an outlier.

Mode

• Arrange data in ascending numerical order.
  
• You can have more than one mode or no mode at all.

Range

• Arrange data in ascending numerical number.
  
• Subtract the largest piece of dat from the smallest.
  
• If you have a large range there is a posibility that you have an outlier.

This is a video that I found about mean, medain, mode, and range.