Labels: aLisa
Welcome to the Jellybean Jar. A World where enthusiasm, creativity and mathematics mesh together.
Tuesday, December 04, 2007
Gr 9 daily blog
Hello class! I changed my scribe a little this time. Hopefully you find it more understandable and easier to go through (:
One thing i forgot to mention on my slide is HOMEWORK! complete pg. 63 1, 3, 5, 7, 9, 11, 13, 15, 19, 21 a & b (:
One thing i forgot to mention on my slide is HOMEWORK! complete pg. 63 1, 3, 5, 7, 9, 11, 13, 15, 19, 21 a & b (:
Labels: aLisa, Daily Blog
Thursday, October 18, 2007
Gr. 9 Math
Today in class we went over our Review worksheets on integers before our end of the unit test which is today. I will be posting up the answers for the worksheet for those who did not get the answers, or want to check over to see if they did they're work correct.
Before i post the answers, you should remember:
Rules for Multipying & Dividing:
( - ) x ( + )= ( - )
( - ) x ( - )= ( + )
( + ) x ( - )= ( - )
( + ) x ( + )= ( + )
The Order for PEDMAS:
PARENTHESIS ( - ) x ( + )= ( - )
( - ) x ( - )= ( + )
( + ) x ( - )= ( - )
( + ) x ( + )= ( + )
The Order for PEDMAS:
EXPONENTS
DECIMALS & MULTIPLYING
ADDING & SUBTRACTING
which ever comes first, you do.
Starting for left to right
ex. (9-4) + 4 x 6
(9-4) + 4 x 65 + 4 x 6
5 + 24
= 29
A number line if you need help on knowing the smaller numbers and larger numbers.
Answers to Review Worksheet on Integers:
1. Highlight the numbers that represent integers
1/2, .3333 , (-4 ), 32, +1/4, 50%, +18
2. State the opposite
-7 +7 -2 +2 +8 -8 -3 +3 +22 -22
3. Complete the chart
(if you do not understand, check the number line at the beginning to help you )
4. Circle the larger integer in each pair.
5. State the Integer described by each of the following:
a) 22°C above zero : +22
b) 9°C below zero: -9
c) 234m below sea level: -234
d) A loss of 13 points: -13
e) A profit of $1216: +1216
f) 8 floors up: +8
g) 12 under par: -12
6. explain and show how you got the answer for +4 + (-3)
- State with 4 positives and 3 negatives
- ■ + ■ = 0 [ cancel zero models]
- Positive 1 is left over
- +4 + (-3) = +1
7. Write out the steps to solve (-16) - (-4)
Step 1: Change subtracting sign to adding
Step 2: Change -4 into +4
Step 3: Add -16 + (-4)
Step 4: take the signs from the larger digits. In this case its (-)
Step 5: Subtract -16 - 4 = -12
The answer for -16 - 4 = -12
8. Complete the table.
9. Use PEDMAS to solve the following:
Ms. Nicholson taught us a new clever trick.
Pick any number: (ex. 2)
Double it: ( 2x2 = 4)
add ten : (2+10 = 12)
subtract your original number: (12 - 2 = 10)
add fourteen: (10 + 14 = 24)
and divide by 6: (24/6=4)
your and answer should alway be four whether you picked a different number, it doesn't matter, it'll always be four.
That was all we did in class today. *REMEMBER, TEST TODAY. Sorry for posting this really late. If there's any questions, or you see i made an error, please inform me, or comment your questions. I'm going to bed now, bye (:
The next blogger will be michael (: good luck.
Labels: aLisa, Daily Blog, grade nine
Thursday, October 04, 2007
assignment 1
Answering questions to assignment 1
1. What is the title of the post and who was the author?
The title of the post is Exponentials & Logarithms --a trick for students; a treat for teachers by Jhoann.
2. What is the math topic that the person was writing about?
The topic the student was talking about was Exponentials & Logarithms. This student was finding the area of triangle ABC.
3. What reasons were given for inducting this post into the hall of fame?
Amazing detail and effort. Colour Illustrations, clear explanations and detail. Obvious that student invests a lot of hard work and time.
4. What did you think of the persons work
I say it was very well done! This person added a lot of information on solving the questions, added a lot of great diagrams, and having different colours was a very excellent touch to the persons post. Even though i do NOT understad any of the math the person was talking about, It was very nice to read over and look at. I would've voted this person to the hall of fame also. Kudos to their hard work.
Labels: aLisa, assignment1