2019 PSLE Discussions and Strategies (Children born in 2007)

[whitecarrotcake]

psleisstress\" post_id=\"1939001\" time=\"1569910720\" user_id=\"181338:

I think is 45cc cuz air can be compressed

It can be compressed to 30 cc.

[Mommy of 3]

psleisstress\" post_id=\"1939002\" time=\"1569910733\" user_id=\"181338:

I think is 45cc cuz air can be compressed

My dd also say 45 as cannot be air become lesser and air can be compressed.

[Dino]

whitecarrotcake\" post_id=\"1939004\" time=\"1569911039\" user_id=\"114080:

psleisstress\" post_id=\"1939001\" time=\"1569910720\" user_id=\"181338:

I think is 45cc cuz air can be compressed

It can be compressed to 30 cc.

hmmmm so answer is 45 or 30???

[whitecarrotcake]

30 cc. A similar qn came out before.

Air can be compressed while water cannot. Water will be 15cc+5cc=20cc and since the container has a volume of 50cc, air can be compressed to fit 30cc.

[whitecarrotcake]

Compressed means more air taking up less space. Hence 30 cc is the answer.

[tryourbest]

30cc. The volume of air will be the volume of space left inside the container. No matter how much additional air u pump in.

[Kei]

psleisstress\" post_id=\"1939002\" time=\"1569910733\" user_id=\"181338:

I think is 45cc cuz air can be compressed

In a container with a capacity of 50unit, if water (which has a fixed volume, thus cannot be compressed) has occupied 15+5=20unit, remaining space for the air to occupy is 30unit

[Mazda12345]

TGP666\" post_id=\"1938965\" time=\"1569908302\" user_id=\"181285:

helpthismom\" post_id=\"1938955\" time=\"1569907100\" user_id=\"149507:

Logic for Q18 related to ball drop and bounce

https://www.asee.org/documents/conferences/k12/2012/2012K12_Ball_Drop_activity.pdf

So KE transformed to GPE and SE

WHAT THE F :censored: !
2 :censored: ING MARKS GONE?
:censored: ! I GOT SCIENCE SO MUCH WRONG TOOOOOOOO???????????????????????!?!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
:censored: :censored: :censored: :censored: :censored: :censored: :censored: :censored: :censored:

Don't cry over spilled milk.Maybe if you do well in higher Chinese, your results will be better!😀At least you tried your best!Last paper already!Lets work hard!😉

[Dino]

whitecarrotcake\" post_id=\"1939008\" time=\"1569911483\" user_id=\"114080:

Compressed means more air taking up less space. Hence 30 cc is the answer.

wow tks. That's my understanding as well.

[mum2girls]

meremortal\" post_id=\"1938861\" time=\"1569897723\" user_id=\"7232:

For all those parents questioning the necessity for such ridiculously difficult questions on the maths paper - the simple answer is that it's to find the top, top students and separate them from the rest. Singaporean students are already the top in the world, if all the exams had the \"normal\" questions, there will be a large percentage who will do very well in the exams, and then there will be a large percentage of students who will do very well in their T-scores.
But since, PSLE is NOT a competition with yourself, but with others, the examiners will need these sort of questions to separate out the top, top from the top to the not quite top to the ok students.
As parents, we should tell our kids not to worry about these questions, to do what they can and move on - this is what I've told my kids - my DS got all these questions wrong, but he didn't cry over it - we know he's done his best and these questions would have been a struggle for him - maybe he'll understand it next year or in two years time or maybe never, but that's ok - move on and learn - focus on what you can do and what you know and do it to the best of your ability!

My two kids have already went through PSLE few years back, one is an above average student, the other is a below average student. When they encountered tough questions, they will never cry over it as we have always tell them, what's important is they never give up trying, they have done their best and have no regrets. My daughter sat for her O Levels last year, many had complained that the Maths questions are completely different from the TYS. My daughter told us that the questions are indeed weird but the formulae and applications to be used are the same so don't overthink. Just apply what you have learnt.