Monday, November 30, 2009
Gordon's Scribepost
Jennifer's ScribePost :]
As you can see, we drew a number line. For every each perfect square, we had to put a square around the number all the way up to 25. We also filled out the side length for each of the perfect squares (Which is very easy to answer) Okay now moving on.. Ms. Usisken also showed us a pattern about those squares. Here's a diagram that will help you explain everything!
As you can see, I putted a black square on every perfect square. And I putted red squares between the numbers between the perfect squares. Now do you see a pattern that is going on? The not perfect squares grows by 2 each time! There is another pattern also! I will show you in the next diagram.
So for this diagram, I putted a black square for the perfect squares. But, instead of putting boxes for this picture, I putted dashes! So this is our next pattern called "Squares between perfect squares" This diagram is also similar to the other diagram but it's using spaces! There is one more thing I need to show you. So here's the diagram;
Since I didn't remember why Ms. Usisken drew this picture but this is the key on finishing the your homework! Also she gave us a few examples on fractions and decimals. So look at the diagram one. Just pretend it's filled with those fractions. For example, 2 as a fraction, it would be one and one-third. As a decimal, it would be 1.33. See what I mean? If you don't get it please comment on what I confuse you.
Sunday, November 29, 2009
How I stopped an Alien Invasion using Proportion
Math problems - in red
BREAKING NEWS IT'S A AN ALIEN INVASION!!!!
THE LITTLE GREEN PEOPLE ARE FINALLY TAKING BACK WHAT THEY THINK IS THEIRS!!!
Unless......... I solve three proportion questions correctly they will destroy us all!!!
It's up to me to save you worthless people with my incredible brain power in math!!!!!
2.Your friend missed the lesson on proportions. Explain
how to use a proportion to solve this problem.
Cheryl is selling marbles. What is the cost of seven marbles?
the cost of seven marbles is 245 cents.
The first question is answered correctly and the aliens are getting back into there spaceships.
3. a) Write a proportion based on the following scenario:
Three balls cost $1.25. What is the cost of 12 balls?
b) Solve the proportion.
The cost of 12 balls is 5$.
Finally thiers putting away their deadly weapons and preparing for lift off.
19. Determine the missing value in each
equivalent fraction.
I have now saved you all, the aliens have fled.
BOW DOWN!!!!
Parts of the a Square.
danielle graphing [bob]
The first thing is that there are different types of graphs
eg. circle graph, bar garph, double bar graph, pictograph, and line graph.
the second thing about graphs are that they are used to represent data in a way you'll understand.
the third thing is that there's allway's something that tells you what the graph is about.
what I need to improve on:
I need to improve on remembering the y-axis and the x-axis.
sorry that this is so late but can you please comment
Saturday, November 28, 2009
How I Stoped an Alien,Bruce8-16(late)
The first question was:
A small gear turns 18 times in the same time that a large gear turns 4 times, how many times will the large gear turn if the small gear turns 54 times?
In the same amount of time that the small gear turns 54 times, the large gear would have turned 12 times.The alien said it was right but not to be too happy because it was probably just luck the answer was right.
The second question is:
Look at the pattern, set up a proportion you could use to find the number of small squares in Figure 7.
In figure 7, there would be 14 squares. The alien is getting nervous which means I was correct and all I needed was one more question to go.
The third and last question:
The dosage of a certain medicine for a child is 2.5 ml for each 3 kg mass of the child. What is the dose, in millilitres, for a child with a mass of 16.5 kg?
For a child with a mass of 16.5 kg, they will have a dose of 13.75 ml of the medicine. I got all three questions right which meant I had defeated the alien. The alien left and I had saved the earth!
Sorry about not having any pictures, my computer wasn't working right.
Please comment
Laura's Late Scribepost About Squares :)
OK, so we have 4 squares. Each square is made up of 100 little squares. Each large square is worth 1. That means that each little square would be worth 0.1. Our job is to find out how many perfect squares we can make out of the 4 large squares. A perfect square is a square in which the side lengths are whole numbers. (Numbers without decimals). Our job after that is to find the side length of a square that uses 2 large squares, 3 large squares, and 5 large squares. So, let's find out! :)
We started out with 1 large square. It's area is 1. This makes it a perfect square because 1 is a whole number. Our next biggest square would have an area of 1.21 because we are adding 21 little squares. (11 on the side, 1o on the top). In order to find the area of a square, you multiply the side length by itself. This would not be a perfect square because 1.21 is not a whole number. Here are the next biggest squares up to 4:
1.44
1.69
1.96
2.25
2.56
2.89
3.24
3.69
4
The only perfect square out of all of those numbers is 4. That means that you can only make 2 perfect squares using 4 large squares.
Now, let's find some side lengths!
2 squares: The side length using one square is 1. If we keep adding to that until another square is used up, we will get a side length of 1.4. (14 little squares on each side).
3 squares: The side length using 2 squares is 1.4. If we keep adding to that until we have used up another square we will get a side length of 1.7. (17 little squares on each side).
5 squares: Earlier, we found out that the area for 4 squares is 4. That means that we have to find out the square root of 4 in order to find the side length. That's easy because everybody should know that 2 x 2 = 4. That means that the side length using 4 squares is 2. If we keep adding to that until we have used up another square, we will get a side length of 2.24. (aprox. 22 little squares on each side).
Thanks for reading!
Friday, November 27, 2009
Jomari's Scribepost, November 26,2009
We started the class learning some things about the squares we made for our previous classes (see the previous scribeposts.).
Here are a few things that we did:
To find the area(the amount of space inside) of a square, we need to find out the length and width and multiply them. Because the sides of a square are all equal, we only need to find one side and multiply it by itself to find the area.
Example:
We also learned that not all squares are perfect squares. Only squares with whole numbers as their sides are perfect squares.
We then learned about square roots. A square root is a number that can equal a given number by multiplying itself by itself.
Example:
Square root of 9 is 3
3²= 9
You can find a square root on a calculator by pressing the √ button and the number you want to find the square root of.
Our homework is to find the square roots of all numbers from 5 to 9.
I hope you guys liked my scribepost! Please leave a comment.
Thursday, November 26, 2009
how I used proportions to save the earth
The questions i'm doing are from pages 67, and 68
#4 Determine the unit rate.
A] 3 dinner rolls costs 99 cents
99 / 3 = 33
Answer: 33cents/roll
B] 7 identical objects have a mass of 14kg
7 / 14 = 2
Answer: 2kg/object
#8. Determine the missing value.
A] 2\3 = 10/15
B]
Wednesday, November 25, 2009
Alexs scribepost, Nov. 25/09
for example, we had tho squares added together to make one big square but to do that we had to cut up 4 little squares into a whole bunch of pieces and put the pieces so that they fit around the big square you already made.
Today we added two more small squares to the big square to make one really big square and it should look like this.
Today we added the two other squares so now it should look like this.
Now that we got all of the smaller squares put into one big square, we can now make the chart about the side length and the area for all of the squares which would look like
So that is basically all we did in class today so now onto the homework for tonight.
You can make 20 perfect squares with 4 squares because the smallest perfect square is 1x1 and the largest perfect square is 20x20 and there is every thing inbetween.
The approximate side length for 2 squares is 14 little squares, for 3 squares it is 17 little squares, and for 4 squares it is 20 little squares
chantel`s scribepost
How many perfect squares can you make with 4 squares ?
- with 4 squares you can make 1 perfect square because with 2 squares it has a decimal and no equal sides. with 3 squares it wouldn't work either because it has different sides. with 4 squares it work work, because with 4 squares it has a whole number.
What is the approx. side length of a square that uses:
;2sides- the approximate side length would be 1.2x1.2=1.44
;3sides- the approximate side length would be 1.3x1.3=1.69
;4sides- the approximate side lenght would be 1.4x1.4=1.96
sorry if its not right, at least i tried. please comment (:
Tuesday, November 24, 2009
Deniel's Scribepost!
Jecelyn's Scribepost
First we started with a 8X10 square and added a 2X10 together so we got 10X10
The we started to add more squares.
Here is a table to help you understand
Sorry if u can't see it well.
The dimensions are 1x1
so then each cube equals 0.1
To get the other area of the square that is getting bigger we just added more blocks on the sides. Like we added another 2X10 but at the corner we added another 2X2. On my square I added 4= 2X10 and 4=2X2. But here is the thing. I was left with another 2X2. I couldn't add it on cause it wouldnt be a perfect square anymore so here is the homework.
Why are 4 squares left over?
Well you guys hope you enjoyed and please comment cause we all know that 8-16 is the best commenting room!!!!!!
Sunday, November 22, 2009
Justin's scribepost, Nov.20
First our factor trees.
1 - 36
2 - 100
3 - 164
4- 196
5- 225
Next in our foldable we had to write " perfect squars" and square roots " straight down on the last page and and make the page look like this .
For homework we had the questions :
Can you make a square with 1 tile?
Can you make a square with 2 tiles?
Can you make a square with 3 tiles?
Can you make a square with 4 tiles?
And also ...
INTRODUCING YOUR JUNIOR 1 BOYS CITY CHAMPIONS!!!
Friday, November 20, 2009
Scribepost, November 20, 2009
firstly, the questions were
-36
-100
-225
-164
-196
on 36 you can find the factors in two ways
On 100, i think you can only do it in 1 way
On 225
on 196
On the factors of 167 is impossible its hard to find it... :(
Next we did the foldable. We folded our foldables and putted some information. it looks like this
.
UHH.. the notes that we did doesn't really look like this but its pretty close. AND ITS MESSY TOO SORRY. and yeah.. remember to do the homework for math. Have a good weekend.
Telisa's Scribepost, Notation and Prime Factorization
Before we could learn that though we needed to review the information we needed to know in order to be able to understand both better.
What are Square Numbers ?
The prouduct of a whole multiplied by itself.
What are Factors ?
A whole number which divided evenly into a whole umber leaving no remainder.
What are Prime Numbers ?
Whole numbers greater than one that can only be divided by one and itself, one isn't a prime number.
What are Prime Factors ?
Factors that are prime numbers.
For Notation we needed to learn what a Square Number was and area ( length multiplied by width )
This is what we got ...
1 = 1 * 1 = 1²
4 = 2 * 2 = 2²
9 = 3 * 3 = 3²
16 = 4 * 4 = 4²
25 = 5 * 5 = 5²
36 = 6 * 6 = 6²
49 = 7 * 7 = 7²
64 = 8 * 8 = 8²
81 = 9 * 9 = 9²
100 = 10 * 10 = 10²
121 = 11 * 11 = 11²
144 = 12 * 12 = 12²
Prime Factorization
To learn this we needed to know what a Prime Factor was, as well as a prime number and factor.
We use this to help narrow down numbes to their Prime Factors and determine if they are Square numbers or not .
examples...
18 = 2 * 3 *3
Thursday, November 19, 2009
Bruce's Scribepost, Nov.19
Well today we went over some of the homeworrk we were assigned to do.
For example...
Factors of...
1-1
2-1,2
3-1,3
4-1,2,4
5-1,5
We also went over some definitions, such as...
Square Numbers-the product of a whole number multiplied by it self
Example...9=3x3
Factors-a whole number which divides evenly into a whole number leaving no remainder.
Example...16=1,2,4,8,16
Prime Numbers-a whole number greater than 1, that has only 2 factors. The 2 factors are 1 and itself.(1 is not a prime number)
Example...
2,3,5,7,11,13
Prime Factors-factors that are prime numbers.
Example...
10=1,2,5,10(the prime factors are 2 and 5)
After homework check we went into Prime Factorization.
Here are a few examples.
18=2x3x3
24=2x2x2x3
36=2x3x2x3
144=3x4x3x4
144=2x2x2x3x2x3
I couldn't draw a factor tree so just look at Ronny's or someone who has a factor tree if you want to understand prime factorization easier.
Than the lady(can't remember her name) told us that the way to find out which one is a perfect square is that it is to have even pairs of the same numbers.
Example...
36=2x3x2x3
2 and 2 are 1 pair
3 and 3 are another pair
If you don't understand what I'm doing ask Mr Harbeck or the other teacher.
Homework is do pages 24 and 25 in your math book.
PLEASE COMMENT!!!
Wednesday, November 18, 2009
SCRIBEPOST, October 18/09
Ronny's Scribepost 11/18/09
Today in math class, we got to finish the square area table:
How to do it!
We get the area of the square by squaring the side length.
1x1=1
2x2=4
3x3=9
4x4=16
5x5=25
6x6=36
7x7=49
After finishing that up, we got to do notes! yay
What are square numbers?
The product of a whole number multiplied by itself.
e.g.
9 is a square number because 9=3x3
What are factors?
A whole number which divides evenly into another whole number with no remainder.
e.g.
1--> 1
2--> 1, 2
3--> 1, 3
4--> 1, 2, 4
5--> 1, 5
6--> 1, 2, 3, 6
7--> 1, 7
8--> 1, 2, 4, 8
9--> 1, 3, 9
10-> 1, 2, 5, 10
11-> 1, 11
12-> 1, 2, 3, 4, 6, 12
What are prime numbers?
A whole number greater than 1 that has only 2 factors. 1 and itself. 1 is not a prime number.
e.g.
2,3,5,7,11, ect.
What are prime factors?
Factors that are prime numbers.
e.g.
10
/ \
5 2
/ \
1 1
After we took the "important" notes, we were given our homework. On a grid paper or a white paper, we had to make a times table of 12x12. So here I am to the rescue for you lazy people who don't know how to multiply or use a calculator:
We were also told to find the factors of 1 - 12.
1--> 1
2--> 1, 2
3--> 1, 3
4--> 1, 2, 4
5--> 1, 5
6--> 1, 2, 3, 6
7--> 1, 7
8--> 1, 2, 4, 8
9--> 1, 3, 9
10-> 1, 2, 5, 10
11-> 1, 11
12-> 1, 2, 3, 4, 6, 12
Thanks for reading ( hopefully all of it ), comment please!
Althea's Scribepost, November 18/09
HOMEWORK FROM YESTERDAY:
This is how we got the answer, we multiplied the number by itself.
NOTES:
1.) What are square numbers?
- Square numbers are perfect square. The product of a whole number multiplied by itself.
example:
9= 3 x 3
4= 2 x 2
16= 4 x 4
2.) What are factors?
-Factors are whole numbers which divides evenly into a whole number leaving no remainder.
example:
Factors of 16 are:
3.) What are prime numbers?
- Prime numbers are a whole number greater than one that has only one factors:
Only 1 and itself. One is not a prime number.
examples:
2, 3, 5, 7, 11, 13, 17.. etc.
4.) What are prime factors?
- Prime factors are factors that are prime numbers.
HOMEWORK FOR TODAY:
• Finish multiplication table. (1-12)
• Find the factors of 1-12. Use your multiplication table to help you.
Factors
1--> 1
2--> 1, 2
3--> 1, 3
4--> 1, 2, 4
5--> 1, 5
6--> 1, 2, 3, 6
7--> 1, 7
8--> 1, 2, 4, 8
9--> 1, 3, 9
10-> 1, 2, 5, 10
11-> 1, 11
12-> 1, 2, 3, 4, 6, 12
Tuesday, November 17, 2009
How I stopped an Alien Invasion using Proportions
6.Delia was paid $35 for 5 h of babysitting. How much should she receive for 3 h? Use a unit rate to find the answer.
Delia would receive 21 dollars for 3 hours of babysitting.
11.A small gear turns 18 times in the same time that a large gear turns 4 times. How many times will the large gear turn if the small gear turns 54 times? Draw a diagram to help set up a proportion and solve the problem.
The big gear will have turned 12 times if the small gear turns 54 times.14. Last night 30 cm of snow fell in 6 h. If it continues snowing at the same rate, how long will it take for 45 cm of snow to fall?Determine the answer two different ways.
If it continued snowing at the same rate it would take 9 hours for the snow to reach 45 cm.
Now that there are three correctly answered portion questions entered into the aliens computer it self-destructs and the alien is left defenseless and flees back to it;s home planet never to return again.
Nhea's Squares, Scribepost, 11/17/09
The dimensions are -
1x1
2x2
3x3
4x4
5x5
What are the areas of these squares? draw them using grid paper.
The areas are -
1 - 1
2 - 4
3 - 9
4 - 16
5 - 25
6 - 36
7 - 49
What is the relationship between the side lingth of the square and the area? The relationship would be that if you multiple the side lengths together you would get the area.
Why are the areas called perfect squares or square numbers? Because the area is made up of the amount of unit squares in a whole square.
Monday, November 16, 2009
how I stopped a alien invation using proportion
#17
Fresh pickerel is advertised in a local market.
2kg
Fresh pickerel
17.5o
a)How much will 6kg of pickerel cost?
6 kg of pickerel will cost $52.50.
b)Use a proportion to find the cost of 1600g of pickerel.
1g=o.oo1kg 1x1600=16oo/o.oo1x1600=1.6g
1600 g of pickerel will cost $14.58.
#18
At an amusement park, a new thrill ride was introduced. it costs $7.50 for 3 rides on the wild slider.
a) what is the wild sliders unite rate per ride?
the wild slider's unit rate per ride would be $2.50/ride.
b) at this rate how much will it cost for 18 rides on the wild slider? Determine the answer in two different ways.
My first way is
My second way is
#19
Determine the missing value in each equivalent fraction.
a) 3/4=18/44=9/12
b)48km/$16=144km/$48=192km/$64