Showing posts with label eunice816. Show all posts
Showing posts with label eunice816. Show all posts

Percents Homework Assignment

Sunday, May 31, 2009
Eunice Cadao
8-16



Hello! On Friday Mr. Harbeck assigned us a math homework, which is to be our last blog post. He gave us an option. We could do all of the questions or do only 2 questions and number 4.


Part A
1) 245% of $356.80










2) 68 3/4% of 730










3) 360% of $129.95







Question 6:
Table salt is a chemiccal compound of sodium and chlorine. Recommended daily intake is about 1700 mg. If Canadians consume 182% of this amount on average, how much sodium is one person eating.










Question 8:
The Nile River is about 209% of the length of the Yukon River. If the Yukon River is 3168 km, how long is the Nile River (to the nearest km) Show your work.






Eunice's Last Fraction Post

Monday, May 11, 2009

Eunice's pythagoras post

Monday, February 23, 2009
Eunice Anne
February 26, 2009
8-16 (:










Pythagoras
is a Greek mathematician and scientist, born between 580 and 572, then he died between 500 and 490 BC. he founded the religion movement called "pythagoreanism". he's best known for the Pythagorean theorem. Pythagoras and his students believed that everything is related to mathematics and that numbers were ultimate reality and everything could be predicted and measured in rhythmic patterns or cycle. with very strict rules of conduct Pythagoras undertook a reform of the cultural life of croton, urging the citizens to follow virtue and form an elite circle of followers around himself called Pythagoreans. he and his students lived at the school he opened, the student is required to be vegetarians. Pythagoras is also the first man to use music as medicine. his disciples would sing hymns to Apollo together regularly. they used lyre to cure illness of the soul or body; they recited poems after sleeping to aid the memory. he died around 90 years old for unknown reason. it was sad that the influence of Pythagoras on Plato and other was so great that he could be considered the most influential of all western philosophers.


According to Pythagoras...

To understand Pythagoras, you must know the meaning of the sides of he right triangle and the right triangle itself.

  • Right Triangle- a triangle in which one of the sides measure 90 degrees
  • Legs- the two sides of the triangle that make up the right angle of the right triangle
  • Hypotenuse- is the longest side of the right triangle
  • R.A.T- is the right angle triangle
  • Greek- is the native language of Greece
  • Theorem- is a law or principle that is tested and argued



I care about grade 8 math because it is a preparation or introduction for the future lessons especially in math and in higher sciences. Also, I just want to have a good mark.






Square
- a square has all equal sides
- all sides of the square is 90 degrees
- a whole square has 360 degrees because if you add all of the 90s you get 360



- internal angles




R.A.T: Right Angle Triangle
- all right angles are 90 degrees
- whole triangle is equal to 180 degrees.






- right angle triangle
- right angle = 90 degrees
- triangle=90 degrees When two angles equal up to 90 degrees they are called COMPLIMENTARY angles that make a straight line equal 180 degrees and the two angles are called SUPPLEMENTARY.










RECTANGLE:
- all sides equal
- quadrilaterals
- internal angles

-sides are 90 degrees
- rectangle= 360 degrees







TRIANGLE:

- a and b make up the legs of the right triangle
- c= hypotenuse
= it is the longest legs of the right angle
- is always across the right angle











Pythagorean Theorem
- the Pythagorean theorem was started by Pythagoras
- it helps you find the c or the hypotenuse or the longest side of the triangle




- 4x4+3x3=25
this square used to be 2 squares. I added them both up to make an equal square. 4x4+3x3=25 then after I have to find a number that ...... (ask mom for help)





Pythagoras Theorem











Proof:




Another one proof:




Finding the sides of the square:













Pythagoras Homework:





















A checkerboard is made of 64 small squares that each have a dimension of 3 cmx3cm. The 64 small squares are arranged in eight rows of eight.



My videos:










Those are all the things that I have learnt in this whole Pythagoras unit. I hoped you liked the pictures and enjoyed my presentation. I apologize for future drawing mistakes if I have. I hoped I helped you understand Pythagoras. I sure did enjoy explaining and making pictures. x) Until next time... BYE! :) :D <3

Eunice's Post Scribe

Thursday, January 22, 2009
Eunice's live Post Scribe :)

Today I am doing a live post scribe. Today in math we are correcting our homework from yesterday. Our homework is the purple booklet pages 43 (all of it). Our homework today are pages 44 and 45. I will try to help you understand on how to solve algebra questions. I'm not going to solve all. I'll just solve some of it. I hope I could help you :D


PAGE 43

P. 3N+8=20 1. copy out the question
-8 -8 2. add zero pairs
3N/3=12/3 3. next, you have to divide 3 to get rid of the multiplication,
N=4
then whatever you do to left side you must do it on the right side.
4. last copy the variable equals the answer

TO VERIFY:
3n+8=20 1. copy out the question
3(4)+8=20 2. substitute the number of the variable
12+8= 20 3. solve
20=20 4. balance





c. -5u+6=41
-6 -6
-5u/5= -35/5
(-1) -u=-7(-1)
u=7

1. write down the question
2. add zero pairs. Whatever you do on the left side you must do it on the
other side to balance it out
3. next you have to get rid of the multiplication, then whatever you do on
the left side you must do on the other side
4. when you have a negative variable you have to get rid of the negative
because there is no such thing as a negative variable.
To get rid of a negative multiply a negative (-1).
You multiply it where the variable isand whatever you do on
that side you must do on the other side.

TO VERIFY:
-5u+6=41
-5-(-7)+6=41
35+6= 41
41=41

1. copy out the question
2. when verifying a negative variable you must
add another negative and multiply it to get rid
of the negatives
3. then solve the question
4. last you have to balance out your answer






j. 2d-9=-29
+9=+9
2d/2=-20/2
d= -10

1. write the equation down
2. add zero pairs
3. divide them to get rid of the multiplication
4. solve it

TO VERIFY:

j. 2d-9=-29
2(-10)+(-9)=-29
-20+(-9)=-29
-29=-29

1. copy out the question
2. substitute the answer to the variable
3. solve
4. balance






PAGE 44 & 45





Page 44:
1. 5n+4=-26
-4 -4
5n/5=-30/5
n=-6

1. write down the question
2. add zero pairs
3. divide the 5 to cancel out the multiplication. Do the opposite.
Whatever you do on one side you must do on the other side.
4. solve it

TO VERIFY:
1. 5n+4=-26
5(-6)+4=-26
-30+4=-26
-26=-26


1. copy out the questions
2. substitute the answer to the variable
3. solve
4. balance





PAGE 45:

1. 5+4n=29
-5 -5
4n/4= 24/4
n=6

1. copy out the question.
2. add zero pairs
3. divide the 4 to cancel out the multiplication.
Whatever you do on that side you must do on
the other side,too.
4.solve


TO VERIFY:

1. 5+4n=29

5+4(6)=29
5+24=29
29=29

1. copy out the question
2. substitute the answer to the variable
3. solve
4. balance





Well, I hope I helped you. We have a test tomorrow. All the questions will be coming from our purple book. Also, Mr. Harbeck will tell us where we can find tomorrow's quiz question. To support our School, wear you pyJAMMIES, because tomorrow is PJ day. Good Luck in the test tomorrow! :) Remember the techniques that I showed you, well Harbeck's technique. Remember his technique and positvely,absolutely sure than you'll be fine ffor tomorrow's quiz! :D good luck again (:


Pay It Forward

Sunday, January 4, 2009

Before winter break we watched the "Pay it forward" movie.The movie was about a boy who could make a difference to someone's life. I, actually watched it last year. I wrote the quote on my agenda,last year. I really wanted to do this assignment.Then when I found out that we had to do this assignement I was thrilled to do it.

So,during the winter break Me,Giselle,Nikki and Giselle decided to shovel my neighbor's walk. My neighbour is 101 years old
. She lives on her own in the old house without company. I saw her one time shoveling her sidewalk and her neighbour's. So since she always shovels her sidewalk for herself, why won't someone else do it for her for a change. So I told my friends, and they were up for it. So we met in my house on December,27th. We failed to tell her to pay it forward. We couldn't tell her to pay it forward because no one would answer the door. After helping, I felt releived because I never did help an anonymous person.

This is a one of a kind assignment. It taught me how to be more thoughtful to other people. Instead of moping or gettting upset because I couldn't get what I want, I thought of the other children who couldn't even get food,shelter and clothes. It also taught me how to be more thankful with what I have : School,friends,family,house,great teacher and etc. This assignment gives a message to help the people who are in need in any way that you can. Just by bringing in pennies,dimes and nickels or bringing an extra jacket to School can help other people,too. I'm done my task helping someone, and so can you! Go MAKE a DIFFERENCE! ONE can MAKE a DIFFENCE!




The Great Big book of Algebra

Thursday, December 4, 2008
Chapter One:
Integer Poetry

Adding Integers- Cinquain
Adding
Sum or total
combine,unit or coalesce
numbers are joined together
plus


Subtracting Integers- Haiku
Taking out numbers
decreasing and lowering
never subtract, add


Partitive Division-free verse poetry
fun,educational,source,strategy,method
only to be used in negative and positive
positive and positive
a pattern applied to algebra
a part of arithmetic
for everyday use

Quotative Division- free verse poetry
Quotative Division
more for the same signs
negative and negative
or positive and positive

The Rule of multiplying integers- free verse poetry
To get the product of integers
simply follow this rule
numbers with same signs
get positive product,
while opposites
a negative product


Chapter 2:
Female: Hello! Mr.Math, are you there?

Male: Yeahp!

Female: I need help! My sister is asking me to help her in her algebra homework.
And I don't want to get mistaken.
It is about algebra.

Female: Her homework is about algebra, combining like terms to be exact.

Male: You mean to simplify an expression or an equation using addition and subtraction of the coefficient?

Female: Exactly!

Male: Oh, well, I'm sure I could help you on that. That was my favorite subject in High School.

Female: Really? That's Cool!

Male: Okay, What is your fist question?

Male: The key to using and understanding the method of Combining Like
Terms is to understand like terms and be able to identify when a
pair of terms is a pair of like terms..

Female: How do I know those like terms?

Male: Example : 45y,8y,-25y, y are like terms because each of them consists of a single variable y. Another is:10, 0,-4,-20, is antoher set of like terms because they are all constants, that is without variable.

Female: Ah, I see. Then after I determine the like terms, what do i do?

Male: Well, you perform the mathematical operation like addition and subtraction involve in each of the variables. Remember that you can only combine like terms.

Female: Okay, Now what's next?

Male: Also remember to follow the rules on how to add, subtract, multiply, and divide integers. That's very important.

Female: Oh, yeah I still remember how to perform the mathematical operation in integers,

Male: That's good! Now you know how to combine like terms Do you have another question?

Female: Oh, that's all for now. Thank you very much. That is very clear.

Male: Well you're welcome. Come again, if you need any of my help on any mathematical questions.




CONTINUATION..
(Combining like terms and Distributive Property)

Female: Hi, Mr. Mathinik?

Male: Hello dear, let me guess why you're here. You're here because you have another
mathematical question, right?

Female: You guessed it right!! Well you know, ever since you taught me about combining like terms I got very interested in algebra.

Male: That's good!

Female: Now I want to show you an equation, which I answered. Please tell me if I'm right or wrong.

Male: Okay, what equation?

Female: n + 3 - 5n + 12. My answer is negative 6n plus 15. Am I right?

Male: Hmm, Let's see. As I've told you have to combine like terms first. So, n minus 5n, plus 12 plus 3. If we combine n minus 5n .This is equal to negative four n and then 12 plus 3 is 15. So,the final answer should be negative 4n plus 15.

Female: Isn't it that n minus 5 n is negative six?

Male: Well, no. Remember in subtracting integers you have to change the sign of the subtrahend then proceed to addition. So that should be n plus negative 5 n which is equal to negative four n. They have different signs so then you subtract. and copy the sign of the number with the bigger value.

Female: Oops! My mistake! I must've forgotten.

Male: That's fine, at least I reminded you. Next time do not forget because if you have one small error,everything goes wrong.

Female: Oh, Thank you. I have another one. I hope now I'm right.

Male: Okay, you're welcome. Tell me your equation.

Female: It's 2+4( 3 n + 8), my answer s 12n plus 10.

Male: Hmm, let's see. Did you know that has a Distributive property of multiplication? Did you apply it?

Female: Oh, yeah!

Male: Good! Let's see how you did.

Male: First you distribute four to all the quantities inside the bracket. So, the equation will be 2+4x3n+4x8; This will become 2+12n+32. Now you can combine like terms. Here, there is only one variable n and 2 constants. So it is now 12n+2+32. What do you think should be the final answer?

Female: Is it 12n+34?

Male: That's right. Is it the same as your answer?

Female: Awww,What happened to my addition?

Male: Well, you just need practice!

Female: Yeah, I'll need it and I also need you.

Male: No problem, at least I'm happy to see that you're interested to learn.

Female: Oh, yeah, you inspired me. You're making it so simple for me. Though, I have to have more practice.

Male: I'm flattered.Hahaha.Yes, you need more practice.

Female: Thank you very much. I hope you don't get tired of me asking for help all the time.

Male: No,no,no,no,no,no,no. I don't mind at all. It's my pleasure.

Female: Okay, thank you very much! Bye now! Have a good afternoon.

Male: You too, missy.









My videos:

Link


Combining like terms












math from Eunice Anne on Vimeo.




CHAPTER 4:

Scribe Post

Wednesday, October 29, 2008





Eunice Cadao
Scribe of the day for 8-16

Hello! I'm today's scribe. I'm going to be talking about, today's discussion. Mr. Harbeck talked about a lot of things today, but I'm only going to be talking about work and homework.

In class today we solved integer problems.We added and subtracted integers. The problems were like algebra questions. So you wouldn't get confused solve them one by one and don't think of it as a single question.

Mr. Harbeck said when you are SUBTRACTING you're really ADDING. You know why?, because when you're SUBTRACTING you're going to have to re-write the equation. When you re-write the equation, you change the subtraction to addition and then you're goin to add the opposite of the subtrahend.

Here's what we did in class.. ( Page 48: 21,22,23,27,29,37,38,39,40 & Page 49: 9,10,11,14,15,25,25)

PAGE 48

21. (-10) + (-8)+(+6)-(+2)= N
(-18)+(+6)+(-2)= N
(-12)+ (+4)= -8

22. (-5)+(-3)-(+14)=N
(-8)+(-14)= -22


PAGE 49

9. (-6)-(+5)+(-3)=N
(-6)+(-5)+(-3)=N
(-11)+(-3)= (-14)

10.(-8)-(+5)+(-3)=N
(-8)+(-5)+(-9)=N
(-13)+(-9)=-22


See how I re-wrote my equations to make it easier. Do the same thing so it's easy and it's required anyways. Well if you still didn't get everyting I said and what Mr. Habeck said, here's a video and a link that might help...

INTEGER LINK





Well, that's it I'm done.I had so much fun doing this. I hope you learned something from my scribe. Don't forget tomorrow we have a math quiz. It's pretty short, and there's nothing new, so nothing to panic. The next scribe is... (drum roll please) ..... JONATHAN! muwahahah.(: Okay bye now! Have fun Seaburn doing scribe! >:D haha! (:

Eunnice's Interger Story

Friday, October 24, 2008







A not so very long time ago, maybe just a month ago, there were four kids. Their names are Chi,Chan, Alice and Odessa, they are friends. One day they were walking into the house to play video games. When they got into the bedroom they turned on the TV, and Wii. When they turned the game on, nothing popped out but letters and it said this: " You can't play! You have a mission! Today you'll learn how to add and subtract integers. Integers are negatice and postive numbers. Think of the positive numbers as money that you have and think of negative numbers as money that you owe. When you're adding a problem with both of the same sign, you just add them up and copy the sign of the bigger value. Now in suctracting integers add the opposite of the subtrahened and cancel the first and copy the common sign. . "The TV clicked off. In this mission the kids were told positive steps means moving forward and negatie steps is backward.



The four didn't care so they just turned the TV on again, but it didn't turn on. At first they thought the TV was just kidding. Later on Odessa's dog came in and gave her a blue envelope. The letter said : As you continue on this journey you will always find a blue envelope like this. The next page will be your first problem. Four kids took (+23) steps down the stairs and (+5) steps out of the house. Since they were told to shout the total numberof steps they did. They raced down the stairs and out the house,They all shouted (+23)+(+5)= +28.

They found another blue envelope, so they read it. It said " Congratulations!That was just simple integer problems, the next problem would be the same mathematical operation. Here's the problem, take (-7) steps out to the backyard into the park." "Oh, this is going to be exciting Alice said. "Hmm, let's see about that!" Chan replied.


As they got to the next location, they picked up the blue envelope. It said " Okay, I see you've done great so far. But I wonder if you'll be able to do the next. Take (+27) steps out to the backyard then turn left, take(-80) steps into the park . After they did the steps they shouted (-53 steps) from [(+27) + (+80.) = 53 ]. " Oh, this is going to be exciting!" Odessa said. " Hmm, let's see" Chan said.

As they got to the next location they picked up the blue envelope. It says " Okay. I see you've done great so far, but I wonder if you'll do the next. The next page said, take (+47) deeper into the park and take (+23) backward steps." Wow that's very confusing! But I know we can do it" Chi couraged. So the kids moved on then after taking the steps they again shouted (+47)- (+23)= +24 steps. They solved it correctly. "Well, now that we're here, what's next?" Alice questioned.

" Oh, there's another envelope" Chan said. And it said "Congratulations! That was pretty hard! But you're smart enought to figure it out anyways. Now try to solve this, this time you'll be the one to figure out the steps to get to the #260 picnic table" . So the kids sat down and talk to themselves on what steps to take. they agreed to take (+150) steps turn left and then take (-110) steps. They got surprised ending up infront of their #260 picnic table. Alice exclaimed " So I guess we got it right (+150) - (-110)= +260.

" After all that hard work, it finally paid off" a voice from behind said. It was Chi and Chan's parents. " Mom! Dad!" Chi said in confusion. " It was you guys after all! I thought it was some stranger!" Alice said. "Yes it was us. Now, wasn't this fun?" Chan and Chi's mom asked. "Nope!" they replied." If i say you get ice cream and cake,would you say it's fun?" Chan and Chi's mom asked. " Yes, ma'am!" they replied. " I did all this, because I knew you kids would play video games again" Chan and Chi's mom said with concern. I did this because you never get some fresh air and you never play anything educational" Chan and Chi's Dad said. " Well, dig in everybody!" Chan and Chi's mom said. " Yay!" they all shouted with joy. Everyone was happy.

THE END.







































































































Eunice's Measures of Central Tendency

Thursday, October 2, 2008
Mean

  • arrange the data in ascending order
  • sum of all data divided by the how many numbers there are
  • when there is an outlier, the mean is less "accurate"
EXAMPLE: 1+2+3+4+5=15/5=3




Median

  • arrange the data in numerical order
  • the middle number
EXAMPLE:1,2,3,4,5,6,7=4


Mode

  • arrange the data in ascending order
  • a number that accurs often

EXAMPLE: 1,2,2,2,3,3,4,4,4,4,4,5,5,6= 4

Range

  • arrange the data in ascending order
  • the greatest number subtracted by the smallest number
  • large range = outlier
EXAMPLE: 4,8,12,16,18,24= 24-4= 20