For those who have guts, google the word trypophobia and look at the images and tell me how you feel. It's interesting to some, but disgusting to others. Try it :) Not gonna post the pictures here because it may affect many of the girls.
Leave a tag/comment to tell me what was your reaction!
Cheers.
Sunday, February 28, 2010
Friday, February 26, 2010
Thursday, February 25, 2010
Questions for EA
1) There were two blocks, X and Y with masses 4kg and 1kg respectively. A steady force of 12.3N acts on block X and the block moved at a steady speed of 6m/s. If the forces between X and Y is 3.1N, find the frictional force acting on X and Y respectively.
2) Two blocks, X and Y of masses 2kg and 6kg respectively were initially at rest on a horizontal surface. A steady force of 10N acts on block X and the blocks accelerated to a speed of 6m/s in 12 seconds. If the forces between X and Y is 5N, find the frictional force acting on X and Y respectively.
3)(*) There were two blocks, X and Y with masses 5kg and 2kg respectively. A steady force of 40N acts on block X and the block accelerated to a speed of 18m/s in 4.5 seconds. If the frictional force acting on X is 10N, i) find the force that Y exerts on X.
ii) hence, find the force that X exerts on Y (hint, Newton's 3rd law)
iii) lastly, find the frictional force acting on Y.
Question 3 is significantly harder than 1) and 2). Please let me know if you found the questions easy, hard, or manageable. I'll be going through them tmrw.
When I exert a force on block X, the force does not 'extend to block Y'. Since my hand is only on X, I do NOT exert any force on Y. The reason why Y will move is because of the force X exerts on it (they are in contact), or due to the tension (in the case of the examples I've went through in class). This concept is very important, please bear it in mind!
cheers.
Wednesday, February 24, 2010
Tuesday, February 23, 2010
Filing
3N should have
- thermal notes
- thermal summary
- quiz on thermal
3EB should have
- worksheet on velocity-time graph (Miss Oon as question)
- MCQ worksheet
- Worksheet on drawing graphs
For 3EA,
Mei Lin, Agil, Shereen and Willem owes me Vectors Quiz
Annabella, Glenda, Xin Yao and Shi Yu owes me Kinematics worksheet.
dig, go go.
Lessons
3N - went through the thermal quiz with them and they seem to understand better, at least Xin Zhu and Zhen Hao seems to be following. The class was very unresponsive today and I was quite sad because they're no longer the cheerful and bubbly class I like a lot. Hui Min was being very distracted and I don't know how I can spark her interest. Ri Lang also appears like he doesn't like physics at all. It's quite sad to be teaching students who are unwilling to learn... Izuwan kept talking to Kenneth as well and I think I'll change places if that carries on.
As I've seen from their suggestions, they wanted to go to the lab. So we'll be doing PBL from next lesson onwards. I hope it'll be less boring for them.
Please bring your textbooks tmrw, even though it is single period.
Pei Jin, Hui Min, Nicholas, RiLang, GuoLiang, Hakim and Irwan(who did not hand up his worksheet) has to stay back on Thursday.
1EA- I was very irritated with the constant beeping of the machine right outside the class so I went out to 'death glare' the worker. It worked :D :D :D but the class was still quite distracted. I did not manage to finish the worksheet and I've assigned homework as punishment. mwuahaha. I did not tolerate with Daniel's nonsense today and I've got a feeling that he's starting to hate me :(
Homework (1EA) - Worksheet 15 and Textbook page 160, q 4,5,9,10.
Many thanks to Azlinda and Seri who sorted out the worksheets for me after school :) I'm making Azlinda my Math Rep because she is more responsible than Brandon.
3EA - Very horrible waste of time. Went through only 6 questions in 2 hours (4 are MCQ, mind you). I feel that I've wasted Paing Paing's time :( So sorry to those who really want to learn. Jo, Agil and Shereen kept laughing and talking behind. Luckily Wai Soon did not join in, if not it'd be havoc. Glenda, Keisha, Karyn and Kar Yong were another talkative bunch. I would switch these two groups around if they continue making noise :(
I've tried to come up with steps to finding the forces acting on a body. Do leave a tag if you don't understand.
As I've seen from their suggestions, they wanted to go to the lab. So we'll be doing PBL from next lesson onwards. I hope it'll be less boring for them.
Please bring your textbooks tmrw, even though it is single period.
Pei Jin, Hui Min, Nicholas, RiLang, GuoLiang, Hakim and Irwan(who did not hand up his worksheet) has to stay back on Thursday.
1EA- I was very irritated with the constant beeping of the machine right outside the class so I went out to 'death glare' the worker. It worked :D :D :D but the class was still quite distracted. I did not manage to finish the worksheet and I've assigned homework as punishment. mwuahaha. I did not tolerate with Daniel's nonsense today and I've got a feeling that he's starting to hate me :(
Homework (1EA) - Worksheet 15 and Textbook page 160, q 4,5,9,10.
Many thanks to Azlinda and Seri who sorted out the worksheets for me after school :) I'm making Azlinda my Math Rep because she is more responsible than Brandon.
3EA - Very horrible waste of time. Went through only 6 questions in 2 hours (4 are MCQ, mind you). I feel that I've wasted Paing Paing's time :( So sorry to those who really want to learn. Jo, Agil and Shereen kept laughing and talking behind. Luckily Wai Soon did not join in, if not it'd be havoc. Glenda, Keisha, Karyn and Kar Yong were another talkative bunch. I would switch these two groups around if they continue making noise :(
I've tried to come up with steps to finding the forces acting on a body. Do leave a tag if you don't understand.
- Draw a free body diagram (diagram containing all of the forces) of the system (every single body)
- Zoom in to the body that you wanna work with (depends on the question)
- Find the resultant force of the body using f=ma.
- Find the applied force / friction using formular "f resultant = f applied - friction".
Remember Newton's 3rd law. If there is a action, there will be a reaction.
:B <>
Homework: Workbook page 18-31 (collect on Monday)
Text book questions on page 65-66, collect on Wednesday. Shereen, Williem, Ling Rui, Jing Wen, Reuben, Ya Qing, I expect you to copy the question.
Cheers :)
Monday, February 22, 2010
Sunday, February 21, 2010
Sticky through the weekends
Homework
1EA- Textbook question found on last page of worksheet 13.
3EA- Force worksheet (use formula F=ma)
3EB- Kinematics worksheet
gradient of displacement time graph = velocity
gradient of velocity time graph = acceleration
area under velocity time graph = displacement
use these 3 concepts for the worksheet.
3N- No homework but please read your notes!
1EA- Textbook question found on last page of worksheet 13.
3EA- Force worksheet (use formula F=ma)
3EB- Kinematics worksheet
gradient of displacement time graph = velocity
gradient of velocity time graph = acceleration
area under velocity time graph = displacement
use these 3 concepts for the worksheet.
3N- No homework but please read your notes!
Beauty
As I walk around the school, I find that there's a misconception on the term 'beauty'. I know right, I've been through this stage too. The stage where everything that is attention grabbing is awsm and cool. The stage where I carried fireengine-red bags to school and wore "coolio cheerleader shoes" with red ribbons as shoelace (someone kill me already).
In the school that I'm teaching in, there are some "models" of cool:
girls:
short skirts,
outrageous hair accessories,
colored hair,
piercings (everywhere!- gone were the days where 4 piercing on each ear is considered "wrong", piercings now extends to tongues (PeiJin), noses (Jerlin), lips (JingYi), and maybe even more),
accessories in general,
shoes with a hint of color,
ankle socks (duh),
hair flying all around,
basically anything that breaks the school rule.
guys:
spiky hair (which I secretly adore),
buttons all the way up (which was cool for a while until the mds came and mass produced this look),
piercings,
thin eyebrows (urgh, h8 this ttm. don't, please. think Charlie Simpson hot),
tapered pants (that's so "my-generation")
I think if you're beautiful, you'll attract attention naturally, with or without such embellishments.
On the contrary, if you're not, doing such things to look "different" and hence to "stand out" will merely tell people how insecure you are of yourself, to have to resort to using such "make up" to package your true self. People may also feel that you're "trying too hard" or you're merely "following the trends blindly" (aka copy cat). There is a difference between "standing out" and "sticking out".
Think about it, in a world where everyone is wildly made up, looking oh so crazy and out of the norm, the only ones who will stand out and be in the limelight are the natural beauties. It may be ironic at first. But think about how the quiet and helpful girl in your class has the most suitors, and how the loud and "bitchy" girl gets the negative attention in class.
This is life.
Make up isn't just about products and mascara and eyeliner (I know right), it is the things you do to yourself to well, make yourself up! The way you present yourself, the way you speak, the things that you do. All these are part of the unconventional "make up".
Speaking of which,
this is make up,
and this,
is what I term "make down"
Sometimes, less really is more.
In the school that I'm teaching in, there are some "models" of cool:
girls:
short skirts,
outrageous hair accessories,
colored hair,
piercings (everywhere!- gone were the days where 4 piercing on each ear is considered "wrong", piercings now extends to tongues (PeiJin), noses (Jerlin), lips (JingYi), and maybe even more),
accessories in general,
shoes with a hint of color,
ankle socks (duh),
hair flying all around,
basically anything that breaks the school rule.
guys:
spiky hair (which I secretly adore),
buttons all the way up (which was cool for a while until the mds came and mass produced this look),
piercings,
thin eyebrows (urgh, h8 this ttm. don't, please. think Charlie Simpson hot),
tapered pants (that's so "my-generation")
I think if you're beautiful, you'll attract attention naturally, with or without such embellishments.
On the contrary, if you're not, doing such things to look "different" and hence to "stand out" will merely tell people how insecure you are of yourself, to have to resort to using such "make up" to package your true self. People may also feel that you're "trying too hard" or you're merely "following the trends blindly" (aka copy cat). There is a difference between "standing out" and "sticking out".
Think about it, in a world where everyone is wildly made up, looking oh so crazy and out of the norm, the only ones who will stand out and be in the limelight are the natural beauties. It may be ironic at first. But think about how the quiet and helpful girl in your class has the most suitors, and how the loud and "bitchy" girl gets the negative attention in class.
This is life.
Make up isn't just about products and mascara and eyeliner (I know right), it is the things you do to yourself to well, make yourself up! The way you present yourself, the way you speak, the things that you do. All these are part of the unconventional "make up".
Speaking of which,
this is make up,
and this,
is what I term "make down"
Sometimes, less really is more.
Saturday, February 20, 2010
Revision: steps to draw a vector diagram
Template for concluding statement:
The resultant force is _______ N and it makes an angle of ______ with the ____ force.
Try not to say "with the horizontal force" because in examinations, the orientation may not be the same for different questions.
(please note that this will come out for your common test)
\m/
- Choose a scale.
- Draw a small point as the body.
(you can do 2 before 1 as well) - Draw the forces acting on the body according to the scale chosen. (label the forces properly, remember the arrows too)
- Draw the dotted lines to form the parallelogram.
- Form the resultant force by connecting the small point (from step 2) with the opposite vertex (official name for the "edge" of any shape). (remember the double arrow)
- Measure the resultant force and the angle it makes.
Template for concluding statement:
The resultant force is _______ N and it makes an angle of ______ with the ____ force.
Try not to say "with the horizontal force" because in examinations, the orientation may not be the same for different questions.
(please note that this will come out for your common test)
\m/
Friday, February 19, 2010
This week seems amazingly short, mainly because it was a three-day work week. Shan't elaborate on my previous days (Wed was a killer).
Today was mostly encouraging.
1EA
Went through the Ratio worksheet with them.
Daniel was being mischievous as usual. If I got 1 dollar for each time he says "Am I your dog?", I'd probably be a hundred dollars richer. His logic is wrapped by the way: every time I want him to "sit down" or "keep quiet", he will shoot me the one dollar question. Does it mean that if he listens to his mom then he is his mom's dog (which implies that he is a dog)? Nah, I don't think it works this way.
I hope he recognise this before he embarrass himself further.
3EB
Much better than the previous lesson (which I died in). Gave them back the quiz; Lisa scored the highest with 13/15 (clap clap). Nadirah scored 13.5/15, but I can't give her the credit since she did not do it with the class. I think Eunice will beat her score since she copied everything from the board -_- but oh well, we're looking for true talent, not talent in copying (cough Huz cough Sham cough cough cough).
Went through the proper presentation for Kinematics (the chapter about displacement, velocity and acceleration).
I taught them that they should
define their "v", "u", and "t" first,
apply the formula
and find deceleration accordingly.
Will be going through gravity soon, ah, I fear for my voice.
3EA
Awesome class to teach, as always. Recapped N1L and went through N2L.
N1L: If there is no resultant force acting on the body, a body at rest will remain at rest and a moving body will continue moving uniformly in a straight line.
N2L: When there is a resultant force acting on a moving of constant mass, it will accelerate in the direction of the force. The magnitude of the force will be equal to the product of the body's mass and its acceleration. (F = ma)
Went through some questions with them but it seems like as if majority of the class couldn't understand (or is it?). The thing I'm really frustrated about is that they'll keep saying that they understand and when I test them, the truth will reveal. It's really disheartening to mark worksheets that are full of mistakes that you've reminded them time after time about..
I'm really thankful to Paing Paing who conscientiously teach her classmates when they're unsure. I wish that there'll be more students like her then life will be a breeze. Also, people like Glenda, Zhe Jun and WaiSoon really makes my life easier by participating in the class. Most of the time when I ask questions it's like talking to the wall. The feeling of rejection sucks so I like them a lot :D
Oh yes, and many thanks to Jo, who did sai kang (odd jobs) for me in my staff room. :D thanks (in that gentle voice he's terrified of)
I'm quite worried for MeiLin (3EA) and Amirul (1EA) who have been absent for pretty long. I wish that my students would mind their bodies well and not fall ill! It sucks (I know right, sore throat for 3 weeks already). I'll tutor them when they're back from MC, but I can't do this all the time so please be healthy!
I wanna get a portable mic so that I don't have to scream all the time :< Not feeling very well these days........................ grr.
Today was mostly encouraging.
1EA
Went through the Ratio worksheet with them.
Daniel was being mischievous as usual. If I got 1 dollar for each time he says "Am I your dog?", I'd probably be a hundred dollars richer. His logic is wrapped by the way: every time I want him to "sit down" or "keep quiet", he will shoot me the one dollar question. Does it mean that if he listens to his mom then he is his mom's dog (which implies that he is a dog)? Nah, I don't think it works this way.
I hope he recognise this before he embarrass himself further.
3EB
Much better than the previous lesson (which I died in). Gave them back the quiz; Lisa scored the highest with 13/15 (clap clap). Nadirah scored 13.5/15, but I can't give her the credit since she did not do it with the class. I think Eunice will beat her score since she copied everything from the board -_- but oh well, we're looking for true talent, not talent in copying (cough Huz cough Sham cough cough cough).
Went through the proper presentation for Kinematics (the chapter about displacement, velocity and acceleration).
I taught them that they should
define their "v", "u", and "t" first,
apply the formula
and find deceleration accordingly.
Will be going through gravity soon, ah, I fear for my voice.
3EA
Awesome class to teach, as always. Recapped N1L and went through N2L.
N1L: If there is no resultant force acting on the body, a body at rest will remain at rest and a moving body will continue moving uniformly in a straight line.
N2L: When there is a resultant force acting on a moving of constant mass, it will accelerate in the direction of the force. The magnitude of the force will be equal to the product of the body's mass and its acceleration. (F = ma)
Went through some questions with them but it seems like as if majority of the class couldn't understand (or is it?). The thing I'm really frustrated about is that they'll keep saying that they understand and when I test them, the truth will reveal. It's really disheartening to mark worksheets that are full of mistakes that you've reminded them time after time about..
I'm really thankful to Paing Paing who conscientiously teach her classmates when they're unsure. I wish that there'll be more students like her then life will be a breeze. Also, people like Glenda, Zhe Jun and WaiSoon really makes my life easier by participating in the class. Most of the time when I ask questions it's like talking to the wall. The feeling of rejection sucks so I like them a lot :D
Oh yes, and many thanks to Jo, who did sai kang (odd jobs) for me in my staff room. :D thanks (in that gentle voice he's terrified of)
I'm quite worried for MeiLin (3EA) and Amirul (1EA) who have been absent for pretty long. I wish that my students would mind their bodies well and not fall ill! It sucks (I know right, sore throat for 3 weeks already). I'll tutor them when they're back from MC, but I can't do this all the time so please be healthy!
I wanna get a portable mic so that I don't have to scream all the time :< Not feeling very well these days........................ grr.
I guess I'll use this as a reflection blog as well. My teaching career may be ending very soon and I'd like a diary to flip (click) through when I'm old and dying. This may allow the older me to realise how fortunate she is to not have to shout at students all day to get them to settle down and to have to mark work that is done halfheartedly.
I know I'm not the most laconic blogger in the world (actually I've stopped blogging since J2), but I do wish that my words will be able to revive certain memories that I want to keep intact for the future. Oh, and just in case you're expecting pictures, NO. Maybe I'll tumblr some photos here and there but don't expect me to "toilet" with you and tak3 picz w0rhzx and p0st 0n miie bl0gs w0rhxzx. h33h33zx. DREAM ON BABY.
Okay no, I've decided to actually really do that on the day that I leave. Toilet breaks FTW :D
I know I'm not the most laconic blogger in the world (actually I've stopped blogging since J2), but I do wish that my words will be able to revive certain memories that I want to keep intact for the future. Oh, and just in case you're expecting pictures, NO. Maybe I'll tumblr some photos here and there but don't expect me to "toilet" with you and tak3 picz w0rhzx and p0st 0n miie bl0gs w0rhxzx. h33h33zx. DREAM ON BABY.
Okay no, I've decided to actually really do that on the day that I leave. Toilet breaks FTW :D
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