Alyssa's "BOB"

B.logging
O.n
B.logging

During this unit I learned how to make xky charts and proportion tables. i first found this unit hard and complicated to follow because there were so many things to learn, but when mr h explained things step-by-step i got a better understandings of it.

My favorite part of this unit are the xky charts; they seemed a little easier for me to do because all the information is there to see. also i enjoyed doing the blue booklet mr h gave us. it was easy and fun. it wasnt a pain to do it for homework. xD

i found the white booklet pretty hard. some of the questions were simple and easy while others were complicated and long. also a lot of the questions had something to do about "looking for lenghts" and i wasnt sure how to that either. i asked for help and i eventualy started to get a hang of it.

Wesley's Scribepost

Today in class the first thing we did was look over Abduls Growing Post.

Then we went over yesterday's homework which was Find 3 different ways to show
35% of 80
60% of 180
90% of 150

Notes
1/100 means divided by 100 or 100 equals groups or 1%



<- 50% is 1/2 of 100. Any number divided by 2 is 50% 10% =10/100 or 10 out of 100 =1/10 or 1 part out of 10 10% is making 10 equal groups or dividing by 10




25%

25 out of 100
25/100 ---> simplifies to1/4







25% = 20 (80 divide 4)
10%= 8 (80 divided 10
35 28
















In class work/homework
find 3 different ways to find, show on grid paper
35% of 120
55% of 90
40% of 25
65% of 180
15% of 40

The next scribe wil be Chris

Thanks to Allan, Matt, Grand Master Flash, Kim, Kim tan Vo

Math Pretest Equivalents

Math Pretest

Convert the following values so that you can place them on the number line below. Show all your work.

0.175

55%

3:10

15/51

9:3

How could you determine whether the average of these numbers is greater than 10 or less than 10 without actually computing the average. Explain how you decided the average was more than or less than 10.

Scribe Post

Today in class we learned about perfect rectengles. We created some perfect rectangles. Heres some examples of perfect rectangles.


Picture from google images.

We also learned about factors, Exponents, and Area.
Hers a quick definition of those three things.

Factors- a number that gives you another number when multiplied together. Example the factors for 18 are 1x18 2x9 3x6.

Exponents- Abbr. expMathematics A number or symbol, as 3 in (x+y)3, placed to the right of and above another number, symbol, or expression, denoting the power to which that number, symbol, or expression is to be raised. Also called power.

Area- A roughly bounded part of the space on a surface

Then we did a a graph that includes all those three things heres mine as an example the area unit might be wrong so double check.



Just in case you cant understand my example hers another from google images.


That the end of my scribe post the next scribe is Rainer lol.

My scribe

Heres my scribe post of what we did today in class.

The notes we took in class

Theorectical Probability
P= PO/TPO What should happen.

Expermental Probability -What does happen

Destined Result/# of tries in exp 4----- 5/10 50%

2-1
3-2
4-3
5-4
6-5
7-6
8-5
9-4
10-3
11-2
12-1
1/TPO=36

Homework

1 Figure out theorectical probability
2 Create an expermental chart
3 -Graph, Theorectical, Expermental, On one graph

First scribe might not be good but i didn't have much to go on.

my game

Does any body know what we have to do

My first probability post

1. Answer one of the question Groups in Full as discussed in class.

Find each probability if you spin the spinner once.
1. P ( red) 1/5 there is 5 options and 1 red. 2. P (green) 1/5 there is 5 options and 1 green. 3. P (blue or white) 2/5 there is 1 blue and 1 white and their is 5 options to pick. 4. P (not yellow) 4/5 there is 5 options and yellow doesn't count. 5. P(not red) 4/5 it has to be yellow, blue, green, white but not red so it doesn't count. 6. P(blue or red or yellow) 3/5 it has to be blue, red and yellow but no white and green.

1. Question. What do all the questions have in common. What would you need to know about probability to be successful at solving them.
2. Answer. All the questions mostly have the same amount example: 1/5 on red and 4 other colors. You would need to know how to do probability to do this question to do the rest of the 1 first.

1. Queston. Are there any common errors students might make when answering any of these questions?
2. Answer. They might forget to look at the brackets example: ( Not red) some people might read it quickly and they think it says (red) so they would make the mistake.

Question. Create your own question(s) to challenge your classmates.
Question of mine own P ( white) find the Probability

My Probability Game

Home work question 1

1.Find each prabability if you spin the spinner once
1.p(red)
a.1/5

2.p(green)
a. 1/5

3.P(blue or white)
a.2/5

4.p(not yellow)
a.4/5

5.p(not red)
a.4/5

6.p(blue or red or yellow)
a. 2/5


2. I got the denominator on everyone by counting how many colours there are.
I got the numerator by counting how many ways there are to get that colour on the spinner.

3.Whats the probability of getting a gray.
a. 0/5
There is no gray on the spinner.

Kim's Probability Work=)

3) Solve


16)What is the probability of guessing the correct answer to a mulitple choice question if there are 5 choices?

The pobability is 20%.

explanation: You find this answer by taking the number of outcomes which is "1," and then divide it by the total possible outcome, which is "5."

1/5 = 0.2% * 100 = 20%



17) What is the probability of guessing the correct answer to a true and false question?

explanation: There are only two answers which is true and false so "2," is the total possible outcome. And you can only choose "1," answer so "1' is the number of outcomes.
So make it into a fractionand percent.

1/2 = 0.5% * 100 = 20%

18) what is the probability that your birthday will fall on Saturday or Sunday?

explanation: There are 7 dats in a week, so "7" is your total possible outcome. Saturday and Sunday are only 2 so that's your number outcomes. Make it into a fraction and a percent.

2/7 = 0.2857% * 100 = 28.57%

homework

Page E-49 question II
Well first how for these questions its a fraction. There is 8 cards in the choices.

7)The probability of getting striped in the choices is P=3/8 or 37.5%

8)The probability of getting white in the choices is P=4/8 Lt(lowest terms) 1/2 or 50%

9)The probability of getting Shaded in the choices is P=1/8 or 12.5%

10)The probability of getting of getting white or shaded in the choices is P=5/8 or 62.5%

11)The probability of getting striped or white in the choices is P=7/8 or 87.5%

12)The probability of getting striped or shaded in the choices is P=4/8 Lt ½ or 50%

13)The probability of getting not striped in the choices is P=7/8 or 87.5%

14)The probability of getting not white in the choices is P=4/8 Lt 1/2 or 50%

15)The probability of getting striped or white or shaded in the choices is P= 8/8 Lt 1 or 100%

Master Flash #4

n) If you flip a coin 150 times, about how many times would you expect to get heads?

answer: 75 150/2=75
2 is the T.P.O. so getting a heads should have 50%chance.
-
c) The letters a, e, i, o, u, and y are vowels. If one letter of the alphabet is chosen randomly, what is the probability it is a vowel?

answer: 6/26 or 3/13

k) If you randomlyu pick a date in April, how many equally likely outcomes are there?

answer: 30
There are 30 days in April so the total possible outcome is 30.

p) A magician asked you to pick a card, any card, from a standard deck of 52 cards. What is the probability of picking an ace?

answer: 4/52 or 1/17
There are 4 Ace in the standard deck so the P.O. is 4/52 or 1/13 .

homework =.=

II Find each probability if you choose one card at random.
#7 P(striped) First you have to find the total possible outcomes which is 8. There are 3 striped squares so the answer is 3/8

#8 P(white) The total possible outcomes for all of these questions is 8 and there are 4 white so the answer is 4/8 , but reducing it will make it 1/2.

#9 P(shaded) there is 1 shaded box P = 1/8

#10 P(white or shaded) there are 4 white boxes and one shaded P = 5/8

#11 P(striped or white) there are 3 striped and 4 white boxes P = 7/8

#12 P(striped or shaded) there are 3 striped and one shaded box P = 4/8 reducing it will make it 1/2

#13 P(not striped) there are only 3 striped, so 3-8=5 P = 5/8

#14(not white) there are only 4 white so 4-8=4 P = 4/8 reducing it will make it 1/2

#15 P(striped or white or shaded) there are 3 striped 4 white and one shaded that means that the answer is 8/8 reducing it will make it 1/1

T.D

E - 49 Part IV & Game

Part I.

19. What is the probability of winning a raffle if 500 tickets are sold and you buy 5 of them?

possible outcome / total possible outcome
5 tickets / 500 all tickets

lowest term
5/500 divide by 5 is 1/100

percent
1%

20. A class of 25 students has 15 girls and 10 boys. If one student is picked on random, what is the probability it is a girl?

po/tpo
15 girls / 25 students

lowest term
15/25 divide by 5 is 3/5

percent
60%

21. There are 26 letters in the alphabet. What is the probability that a letter chosen at random is in the word MATHEMATICS?

MATHEMATICS has 11 letters but some of them are doubles.
So there are only 8 different letter in the word.

po/tpo
8 letters in mathematics / 26 letters in the alphabet

lowest term
8/26 divide by 2 is 4/13

percent
30.77%

A class of 30 students has 15 girls and 15 boys. If one student is picked on random, what is the probability it is a boy?

po/tpo
15 boys / 30 students

lowest term
15/30 divide by 15 is 1/2

percent
50%

Part II.

Fun and Games

You and some classmates need to create a game for a booth at the school carnival. The game should be easy to make and set up. I should be fun, too, but it mustn’t take long to play. Of course the game must be fair. This means that any player would have about the same chance of winning as losing.

The objective of the game is to take your bear from the store to their home. To move your bear you use 2 6 sided dice: 1 space - roll 6 or 7 or 8; 2 spaces - roll 4 or 5 or 9 or 10; 3 spaces - 3 or 11; rolling a 2 makes you move 2 spaces and gives you another turn; rolling a 12 makes you move 4 spaces but you will lose your next turn. Also the board has different things that will help you go forward or backwards.

The game should be fair since all players can roll different numbers to help them win.

Why we learn Math

As I was cruising the net looking for something interesting to say I found this movie at Google Movies. The Math Lesson


is the reason why we learn math and need to understand the concepts behind the arithmatic.

Enjoy the show!!

Leave a comment about what you think about this video clip.

Mr. Harbeck

This is My Life

A Graph of My Life

Estimate the amount of time you spend each weekday doing the following activities:

Playing
Attending school
Doing homework
Sleeping
Watching television
Other activities

Make a graph that represents your estimates. Please remember that there are 24 hours in a day!

This Assignment is due Thursday, September 14.
Please leave comments on this post if you have any questions.

Mr. Harbeck