4N1 Rhapsody

Students, please hold your pen,
Put your pen against the paper,
write down all the formulas,

Students, lesson had just begun,
But some of you are already dreaming away-
Students ooo,
No matter what, you must try-
I will not repeat this again, tomorrow-
Carry on, carry on, you know every lesson matters-

Too late, exams have come,
Send shivers down your spine-
Your head's aching all the time,
Goodbye to your books and notes
Gotta leave them all behind and face the truth-
Student ooo-
you don't want to fail,
Don't you wish you had studied a little more?

---sung to the tune of Bohemian Rhapsody (By Queen*)

*NOt ShuWen, But Queen as in Freddy Mercury Queen

homework and things to bring 19/2/09

hi guys sorry for the wait......

Todays hw:
A math tys pg 110 , qn 10 , 11 ... page 111, qn 13 , 15 ... page 112 , qn 16
More practice on probability paper

friday's lessons:
mother tongue , a math , english , socials studies

REMEMBER!!!
bring along your A math tys and notebook just in case mdm lo ask for it....
those who haven give the edusave forms remember to bring it tomrrow

p.s
u guys can use the science blog for science questions that u guys don't understand
me and ben will try to help u guys out ^^
for the PE file , do u guys want to buy it yourself or u wan me to buy for u guys
its not free u have to pay... but it is cheaper i think...
comment on this post , but by friday if less then 7 person commented , u guys will have to buy it yourself

E Math Probability HW

These are tips for Ex 2.4 Q12-14

Q14
I will use a simpler example to explain.

I have forgotten my password to my hurray! account. I know it is either pretty123, gorgeous123 or enchanting123. I have two tries to get it right. So i type in "pretty123" but it is wrong. I am prompted to key in the password again. Which password should I key in now? HOw many choices have I left?

So the probability of me being successful in my 2nd try is
P(successful in 2nd try) = P(fail 1st try, successful 2nd try) = (1/3)(1/2) = 1/6

Q13
This is similar to our Mr. Pitt getting married and having a child with blue eyes question.

Q12
Draw a tree diagram.

VECTORS E LEARN

THIS IS THE DIAGRAM FOR STEP 6.

Tips to A Math TYS questions

p. 112 Q16a

Find the x coordinate of the point on the line y= 5 - 2x where xy is a maximum.

How to think in this question?
Firstly, we usually do dy/dx and we need to have a y function in terms of x e.g. y=ax+bx^4.
In this question, there is no direct function of x. However, you are given y= 5 - 2x and xy. Can you put them together?

i.e. substitute y= 5 - 2x into xy?
Then you differentiate the function w.r.t x.
To find max or min, the 1st derivative =0.

p. 110 Q11
Some of you asked me what is a flower bed?
In this IT age, you can utilize the wonderful internet and just GOOGLE it!

Jay Chou sang about a chrysanthemum flower bed -- 菊花台
You can also see the link here for FLOWER BED

The important thing here is to sketch a simple diagram based on the requirements of the question.

And the diagram is VERY simple! Only a circle and a square!
However, there may be different ways to draw them.

No matter how you lay these two flower beds, your fence will be the perimeters of these two shapes. Hence, x(x) + circumference of circle = 40 (total lengthof fence as given by the question). You can then express x in terms of r and pi.

homework and things to bring 17/2/09

hi guys sorry for the wait......

Todays hw:
A math tys pg 110 , qn 10 , 11 ... page 111, qn 13 , 15 ... page 112 , qn 16

tuesday's lessons:
physics , E math , chemistry , mother tongue

REMEMBER!!!
bring along your E math tys and notebook just in case mdm lo ask for it....
those who haven give the edusave forms remember to bring it tomrrow
the A math hw is due on friday and not tomrrow so take your time to do it...
the E math homework is due tommrrow remember to do it ^^

p.s
u guys can use the science blog for science questions that u guys don't understand
me and ben will try to help u guys out ^^

home work and things to bring 16/2/09

hi guys sorry for the wait......

Todays hw:
E math tb exercise 2.4 qn 5 , 7 - 14

tuesday's lessons:
PE , a math , physics , mother tongue , ME , english(act)

REMEMBER!!!
bring along your A math tys and notebook just in case mdm lo ask for it....
those who haven give the edusave forms remember to bring it tomrrow
the E math hw is due on wednesday and not tomrrow so take your time to do it...

p.s
u guys can use the science blog for science questions that u guys don't understand
me and ben will try to help u guys out ^^

Our weekly plan.

Tue A Math
1. going through Block test corrections
2. reflections
3. Math weekend HW

Wed E Math
1. E learning (Introduction to Vectors)
2. Online test on Probability

Thu A Math
1. Introduction to Integration ch 19

Thu ACT
1. E Math--Statistics and Probability

Fri A Math
1. More on Integration ch19

Preview of Next week:
Class test on Probability
Class test on Differentiation (More focus on Connected rate of change and Maxima and MInima)

homework and things to bring 13/2/09

hi guys sorry for the wait......

Todays hw:
practice exercise part 3 qn 1 , 3 , 4 , 8-11

monday's lessons:
english , E math , geography , chemistry(act)

REMEMBER!!!
bring along your E math tys and notebook just in case mdm lo ask for it....
those who haven give the edusave forms remember to bring it tomrrow
tomrrows act should be chemistry because last week monday is the physics test

p.s
u guys can use the science blog for science questions that u guys don't understand
me and ben will try to help u guys out ^^
i will ask ben to put a chat box asap in the science blog ^^

Tips to A Math weekend assignment

Dear 4N1, here are tips to this weekend's A math assignment on Maxima and Minima.

Q1 Very simple. I am sure you can do it!

Q3 Also very easy.

Q4 Just find turning point and use the 2nd derivative to determine whether it is max or min.

Q8 Don't you think this resembles the question we discuss in class on Fri, when I cut out a piece of blue paper to illustrate the question? Well, you can draw out this diagram too, to help you understand. Remember, you need to find the volume too.

Q9. wait for my upload

Tips to today's HW

Q6
Volume of a cuboid = L x B x H
In the question, can you see that x+y=3 (as 2x+2y=6)

For the base of the box, one side is y, the other side is 2-2x.

Hence, for the cuboid,
you have
L : y or (3-x) because x+y=3
B : 2-2x
H : x

Hence use L x B x H to find vol of box.

For this topic, instead of dealing with y=function of x all the time, we solve problems relating volume of prisms, areas etc.

Method is similar to finding turning (stationary points) of curves.
Tomorrow I will still spend some time on this topic.

homework and things to bring 12/2/09

Todays hw:
exercise 16.3 do in a math notebook qn : 1a , 1c , 2a , 2c , 6

wednesday's lessons:
mother tongue , a math , english , socials studies

REMEMBER!!!
bring along your a math tys and notebook just in case mdm lo ask for it....
those who haven give the edusave forms remember to bring it tomrrow

On discussion of class t shirts.

Erh... like what I told some of you, this blog is meant for the discussion of Mathematics.

However, since the level of enthusiasm is so high, I will temporarily allow the discussion of Class T shirts here.

Nonetheless, I would like to impose some conditions.

1. For any poll/voting, you must do a statistical report. (measures of central tendency, pie chart etc)

2. For collection of money for the t shirts, a spreadsheet (for accounting purpose) must be posted here.

3. Do not comment using a new post! Keep the blog neat and tidy. If you need to comment, click on post a comment.

4. Every post must have a title and a label. Label should be Class T shirt. Examples of titles can be "Class T shirt Design 1", "Payment for Class T shirt" etc.

class tee

4n1 plz visit my blog to vote for the colours of class tee shrt

homework and things to bring 11/2/09

Todays hw:
exercise 16.2 do in a math 1 qn : 1a , 1d , 2a , 2d , 3-9

wednesday's lessons:
a math , geography , chemistry , english , socials studies

REMEMBER!!!
bring along your a math tys and notebook just in case mdm lo ask for it....
and good luck for the a math test tomrrow^^
remember to sign your edusave form for the local students and bring the money for the international students

class T-shirt

most of u guys wan to make a class T-shirt for our class
so i need ppl to come up with designs and post it on the blog
and wad colour u all like, our friend wu pan will check out the prices for us

things to bring and homework 10/2/09

Todays hw:
exercise 2.3 qn 1~6 , do in math 2

wednesday's lessons:
physics , a math , chemistry and mother tongue

REMEMBER!!!
bring along your a math tys and notebook just in case mdm lo ask for it....
and good luck for the geography test tomrrow^^
remember to bring physics stuff for physics lesson
set square
protractor
workbook
textbook
file

Online test for Probability

Those who did not have MT Block test attempted this online test on Probability.
Heymath online test on Probability


Despite informing them and reminding them about responsibility in learning and integrity, some were discussing the solutions and helping one another.

This is a self test for you to find out whether you really understand the topic of Probability. This is a matter of self awareness. When you do the test and find that there are certain questions which you do not understand, you can read up on it or post your queries here. There is absolutely no point getting full marks from sharing solutions with your friend.

Hence, I will expect all of you to complete the online test on your own! THIS IS A SELF TEST! Deadline: 11pm on Sunday (15 Feb)

Some resources

A website you can access to know more about Probability, especially those who think you need more explanations.



http://www.mathgoodies.com/lessons/vol6/intro_probability.html

JOURNAL WRITING 09/02/09

I had a glimpse of some of the Journal Writing you all did during my absence.

A few were quite good written.

Nonetheless, some did not read the question correctly.

You are supposed to write a letter.....

Anyway, I will be giving out prizes to the top 5 articles.