Showing posts with label Erikae8-17. Show all posts
Showing posts with label Erikae8-17. Show all posts
Scribe Post for April 13 2009
Today in class, we learned about adding fractions. Mr. Harbeck gave us an example which was, 1/2 + 1/3. He said it equaled 2/5, and asked if it was correct.
This picture says, 1/2 + 1/3 is bigger than
2/5 when you compare it. So it makes it wrong.
What you need to add fractions is common denominators (you get it by multiplying the 2 denominators) and the same size pieces. So for 1/2 + 1/3, the denominator is going to be 6.
This picture says, 1/2 + 1/3 is bigger than
2/5 when you compare it. So it makes it wrong.
What you need to add fractions is common denominators (you get it by multiplying the 2 denominators) and the same size pieces. So for 1/2 + 1/3, the denominator is going to be 6.
Skills Assignment : Fractions
In our Math class, Mr. Harbeck was teaching us about fractions, and how you compare them. During our Skills class, Mr. Harbeck told us to find two different ways between two fractions. We were assigned to show if the fractions were the same, smaller, or bigger. The way you find out if a fraction is bigger, smaller or the same is by using a picture, or a decimal.
The first fraction we were given was; 2/3 and 4/6. Is 2/3 bigger, smaller, or the same as 4/6? To find out, let's find the decimal of the two fractions.
DECIMAL :
First you divide 2 by 3, and you get 0.666 [repeating]. Then you divide, 4 by 6 and you get 0.666 [repeating]. So now, you know that these two fractions are the same! Another way you can say they're the same is saying that they are equivalent.
PICTURE :
The second fraction Mr. Harbeck gave us was; 1/8 and 1/4. Is 1/8 bigger, smaller or the same as 1/4? To find the answer, we do the same thing as the first one.
DECIMAL :
First, you divide 1 by 8. You get, 0.125, and when you divide 1 by 4. You get, 0.25.
This proves that 1/4, is bigger than 1/8.
PICTURE :
The first fraction we were given was; 2/3 and 4/6. Is 2/3 bigger, smaller, or the same as 4/6? To find out, let's find the decimal of the two fractions.
DECIMAL :
First you divide 2 by 3, and you get 0.666 [repeating]. Then you divide, 4 by 6 and you get 0.666 [repeating]. So now, you know that these two fractions are the same! Another way you can say they're the same is saying that they are equivalent.
PICTURE :
The second fraction Mr. Harbeck gave us was; 1/8 and 1/4. Is 1/8 bigger, smaller or the same as 1/4? To find the answer, we do the same thing as the first one.DECIMAL :
First, you divide 1 by 8. You get, 0.125, and when you divide 1 by 4. You get, 0.25.
This proves that 1/4, is bigger than 1/8.
PICTURE :
Pythagoras
This week, every grade 8 class were given an assignment about a man named Pythagoras; a mathematician, and his theorem Pythagorean Theorem.
This here is, Pythagoras. Pythagoras; the greatest genius who ever lived. An "uber" smart mathematician he is. Also Pythagoras is a philosopher from Greek. No one really knows if Pythagoras really did exist, because nobody found any evidence about his existence.
A part of this assignment was to find a definition for these important vocabulary words;
Hypotenuse: the hypotenuse is the longest side of the right triangle, and this is the opposite side of the right angle.
Legs: the legs are always shorter than the hypotenuse. The legs create the "right" angle in the triangle. The legs are placed on either side of the triangle. All triangles have to have 2 legs.
Greek: A Greek is a person who was born or who is living in Ancient or Modern Greece.
Theorem: Theorem is a formula or it could be a theory that can be proved.
R.A.T: R.A.T stands for Right Angle Triangle.
Another thing we were to do for this assignment was to explain the artifacts that Mr. Harbeck posted up for us.
One of the artifacts is the Pythagorean Theorem. Pythagorean Theorem: the Pythagorean Theorem is the sum of the areas of the two squares on the legs, (which is a and b) equals the area of the square on the hypotenuse (which is c)
This artifact is known as a right triangle, or R.A.T (Right Angle Triangle) The right triangle has a 90 degree angle, which is the little square inside the triangle corner. All in all the triangle is 180 degrees.
In this artifact, this is just a plain square. The lines on each sides shows that each of those sides are equal to the others. The square has 2 right triangles, that looks like the first artifact. This square has four 90 degree angles which means that angles equal 360 degrees, and to get that you times 90 degrees by 4 which equals 360 degrees.
This here is, Pythagoras. Pythagoras; the greatest genius who ever lived. An "uber" smart mathematician he is. Also Pythagoras is a philosopher from Greek. No one really knows if Pythagoras really did exist, because nobody found any evidence about his existence. A part of this assignment was to find a definition for these important vocabulary words;
- Hypotenuse
- Legs
- Greek
- Theorem
- R.A.T
Hypotenuse: the hypotenuse is the longest side of the right triangle, and this is the opposite side of the right angle.
Legs: the legs are always shorter than the hypotenuse. The legs create the "right" angle in the triangle. The legs are placed on either side of the triangle. All triangles have to have 2 legs.
Greek: A Greek is a person who was born or who is living in Ancient or Modern Greece.
Theorem: Theorem is a formula or it could be a theory that can be proved.
R.A.T: R.A.T stands for Right Angle Triangle.
Another thing we were to do for this assignment was to explain the artifacts that Mr. Harbeck posted up for us.
One of the artifacts is the Pythagorean Theorem. Pythagorean Theorem: the Pythagorean Theorem is the sum of the areas of the two squares on the legs, (which is a and b) equals the area of the square on the hypotenuse (which is c)
This artifact is known as a right triangle, or R.A.T (Right Angle Triangle) The right triangle has a 90 degree angle, which is the little square inside the triangle corner. All in all the triangle is 180 degrees.
In this artifact, this is just a plain square. The lines on each sides shows that each of those sides are equal to the others. The square has 2 right triangles, that looks like the first artifact. This square has four 90 degree angles which means that angles equal 360 degrees, and to get that you times 90 degrees by 4 which equals 360 degrees.
The Great Big Book of Algebra
Chapter One
Haiku; Adding Integers
Adding Integers
cancelling with zero pairs
with algebra tiles.
Picture; Subtracting Integers
There's no such thing as subtracting,
You just change the minus to a plus.!
Tanka; Partitive Division
Sharing with a group,
you give a card to each one.
It has to be equal,
sometimes partitive won't work,
multiplicative inverse.
Free Verse; Quotative Division
You're finding groups in a question
may I give you a suggestion?
Its an easy education
once you get all the right definitions.
Divide them into equal groups,
its as simple as tying a loop.
Free Verse; Rule for Multiplying Integers
When brackets kiss they multiply,
as they can reply.
Its as easy as pie.
Positive and negative equals negative,
they can all be massive.
Negative and negative equals positive,
Haiku; Adding Integers
Adding Integers
cancelling with zero pairs
with algebra tiles.
Picture; Subtracting Integers
There's no such thing as subtracting,
You just change the minus to a plus.!
Tanka; Partitive Division
Sharing with a group,
you give a card to each one.
It has to be equal,
sometimes partitive won't work,
multiplicative inverse.
Free Verse; Quotative Division
You're finding groups in a question
may I give you a suggestion?
Its an easy education
once you get all the right definitions.
Divide them into equal groups,
its as simple as tying a loop.
Free Verse; Rule for Multiplying Integers
When brackets kiss they multiply,
as they can reply.
Its as easy as pie.
Positive and negative equals negative,
they can all be massive.
Negative and negative equals positive,
Erika's Monokuro Boo Story
One hot sunny summer day, Monokuro called Boo to ask if she wanted to eat lunch with him.
“Do you want to have lunch with me?” said Monokuro.
"Sure! I'll call you when I'm ready. bye."
Monokuro ran out of bed and got ready, But Boo took two hours to get ready, and it was already 2 pm! Monokuro calls Boo several times to ask if she was done, but she was too busy getting ready. Half an hour later, Monokuro calls Boo and says..
"Hey Boo! I'm done are you?"
Monokuro sighs. He was so relieved, he was so hungry that he could eat anything. Anything!
So Monokuro picks Boo up, and off they went to the restaurant. But when they got there they also had to wait thirty minutes to get a seat. When they got a seat Monokuro was so relieved.
"Finally!" Monokuro said.
Monokuro ordered a bowl of alphabet soup because he loved alphabets, and Boo ordered a boring salad. Boo also ordered a giant potato, she had a thing for potatoes. Monokuro saw the alphabet soup and found out that it wasn't alphabet soup.
"What is this rubbish?!" He yelled at the waiter.
"Why sir, we're out of alphabets, can you just eat the numbers?"
Monokuro looks down at his soup, there he saw some numbers. He didn't like numbers he liked alphabets, but he didn't mind because he was so hungry. Before Monokuro ate his soup he looked over at Boo, she already started eating her potato she was eating it like an apple but that potato was giant! Then, he finally took a sip of the soup, then all of a sudden he noticed that the numbers in the soup was actually a question.
While Monokuro was trying to solve the question, Boo went to go to the washroom to go wash her hands, and while she was washing her hands, she couldn't turn the water off and it was overflowing. When she was going to dry her hands, a sheet of paper came out with a math question. and it said;
"To stop the water from overflowing, you MUST answer this integer question!"
So Boo leaves the washroom with the integer question. Since Monokuro knew all about integers, and Boo decided to ask him for help.
"Hey Monokuro, you know a lot about integers, do you mind helping me with this one?" Boo asked.
"No of course I don't mind! what is it?" Monokuro replied.
Monokuro wrote the question down, and together they tried figuring what the answer was.
The question was; (+5)+(+7)=?
“Do you want to have lunch with me?” said Monokuro.
"Sure! I'll call you when I'm ready. bye."
Monokuro ran out of bed and got ready, But Boo took two hours to get ready, and it was already 2 pm! Monokuro calls Boo several times to ask if she was done, but she was too busy getting ready. Half an hour later, Monokuro calls Boo and says..
"Hey Boo! I'm done are you?"
Monokuro sighs. He was so relieved, he was so hungry that he could eat anything. Anything!
So Monokuro picks Boo up, and off they went to the restaurant. But when they got there they also had to wait thirty minutes to get a seat. When they got a seat Monokuro was so relieved.
"Finally!" Monokuro said.
Monokuro ordered a bowl of alphabet soup because he loved alphabets, and Boo ordered a boring salad. Boo also ordered a giant potato, she had a thing for potatoes. Monokuro saw the alphabet soup and found out that it wasn't alphabet soup.
"What is this rubbish?!" He yelled at the waiter.
"Why sir, we're out of alphabets, can you just eat the numbers?"
Monokuro looks down at his soup, there he saw some numbers. He didn't like numbers he liked alphabets, but he didn't mind because he was so hungry. Before Monokuro ate his soup he looked over at Boo, she already started eating her potato she was eating it like an apple but that potato was giant! Then, he finally took a sip of the soup, then all of a sudden he noticed that the numbers in the soup was actually a question.
The question was (+9) + (-4) = ?
While Monokuro was trying to solve the question, Boo went to go to the washroom to go wash her hands, and while she was washing her hands, she couldn't turn the water off and it was overflowing. When she was going to dry her hands, a sheet of paper came out with a math question. and it said;
"To stop the water from overflowing, you MUST answer this integer question!"
So Boo leaves the washroom with the integer question. Since Monokuro knew all about integers, and Boo decided to ask him for help.
"Hey Monokuro, you know a lot about integers, do you mind helping me with this one?" Boo asked.
"No of course I don't mind! what is it?" Monokuro replied.
Monokuro wrote the question down, and together they tried figuring what the answer was.
The question was; (+5)+(+7)=?
After Monokuro and Boo ate lunch Monokuro asked Boo where she wanted to go.
"Hey Boo, where do you wanna go?" Monokuro said.
"Hm, I'd like to go shopping, did you want to come with me Monokuro?"
"Oh sure! let's go :)"
So Monokuro and Boo went to the Mall of Asia to do some shopping. Boo wanted to go to the brand name stores and Monokuro wanted to go to the stores with all the anime stuff. Monokuro loved anime, and Boo loved brand name clothes. So they went their seperate ways and decided to meet up at the food court at 5 pm. So Boo and Monokuro went shopping, and while Monokuro was looking at how much the prices of the comic books were, he was trying to see how much he would get back if the book was 35 and he was going to pay with a 50. So Monokuro writes it down,
(+50)+(-35)=
(+50)+(-35)=
have 50 and owe 35= +15.
So after Monokuro buys the comic book, he went to the food court to meet Boo. Monokuro and Boo were so tired from shopping! So Boo asked if Monokuro could drop her off home so she could rest, and Monokuro dropped her home, and Monokuro went home as well, reading his new comic book.
To Be Continued..
Scribe Post for October 14, 2008
Probability
Today in class we went through what Theoretical Probability and Experimental Probability means. We also went through the sheet called Which Italian Insects Often Fall In Love?
This is what Theoretical and Experimental Probability means;
Theoretical Probability - is the ratio of the favorable outcomes to the total possible outcomes, and is what should happen.
Experimental Probability - is the ratio of the favorable outcomes to the total number of trials.
Here are four of the questions on the worksheet we worked on today;
Front page ; Question 13:
You roll a number cube numbered from 1 to 6.
P(a number divisible by 4)
Express the probability as a fraction.
Only 4 is divisible by 4.
1/6 = 0.16 = 16.6 %
Front page ; Question 11:
You roll a number cube numbered from 1 to 6.
P(a number grater than 4)
Express the probability as a fraction.
Only 5 and 6 are greater than 4 using dice.
2/6 = 0.3 = 33.3%
Back Page; Question 10;
Back page; Question 5
Erika's Measures of Central Tendency
- Arrange the data in ascending order.
- The sum of numbers divided by how many numbers there are in a data .
- With an outlier the mean is less accurate.
- Arrange the data in ascending order.
- The middle number in a set of data.
- Find the middle number.
- If there are 2 middle numbers you find the mean of them.
- Great to use if there's an outlier.
- Arrange the data in ascending order.
- The most frequently used number in the data.
- Data that appears the most.
- More than one mode.
- You can have no mode.
- Arrange the data in ascending order.
- Subtract the smallest data from the largest data
This is the video I found on MEAN , MEDIAN , MODE , and RANGE .
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