HappyFaye:

NGU Learning:

[quote=\"Kangkangteo\"]If the question is \"Why does clear glass .....?\", my answer will be as given by the teacher.


But since the question asks \"How ....?\", I will need to explain instead of just stating that it is transparent.

You may want to clarify with his Science teacher. It is likely that they will finally mark both answers as correct.

I'd like to add on a small but important point regarding this question. In the latest syllabus by MOE, students are not required to know the term \"transparent\". Therefore, kangkangteo's answer would be acceptable.

When such situations arise, I would also advise the student to ask the teacher politely if the answer can be accepted.

For a summary of the new Science syllabus, you may refer to my post: http://www.kiasuparents.com/kiasu/forum ... 7#p1380327.

Hi, the new 2014 syllabus is only affecting P3 students of 2014. Current P4-P6 is not affected.

From MOE website http://www.moe.gov.sg/education/syllabuses/sciences/

2008 Science (Primary) Syllabus (708kb .pdf)
(The 2008 primary science syllabus is offered by students who are in P4, P5 and P6 in 2014)
2014 Science (Primary) Syllabus (708kb .pdf)
(The 2014 primary science syllabus is offered by students who are in P3 in 2014)[/quote]Hi, thanks for the clarification.

Kangkangteo:

DedicatedDad:

[quote=\"Kangkangteo\"]

Clear glass allows most of the light reflected from the display to pass through it and into the shoppers' eyes so that they can see the display clearly.

this is son's answer too,but cher mark wrong and the given answer is, It is transparent. :roll:

If the question is \"Why does clear glass .....?\", my answer will be as given by the teacher.

But since the question asks \"How ....?\", I will need to explain instead of just stating that it is transparent.

You may want to clarify with his Science teacher. It is likely that they will finally mark both answers as correct.[/quote]I'd like to add on a small but important point regarding this question. In the latest syllabus by MOE, students are not required to know the term \"transparent\". Therefore, kangkangteo's answer would be acceptable.

When such situations arise, I would also advise the student to ask the teacher politely if the answer can be accepted.

For a summary of the new Science syllabus, you may refer to my post: http://www.kiasuparents.com/kiasu/forum ... 7#p1380327.

S-H:

Hi, please help the following qtn:


Lisa has some apples and pears in a basket. If she buys 10 apples, 3/5 of the fruits in the basketare pears. If she buys 30 pears, 3/4 of the fruits in the basket are pears. How many apples are there in the basket?

Apples: 2 units - 10 = 1 part
Pears: 3 units = 3 parts - 30

3 units = 6 units - 30 - 30
3 units = 60
1 unit = 20

Number of apples = 2 * 20 - 10 = 30 apples

oceanh2o:

Hi , please help


http://i61.tinypic.com/142ugi9.jpg\">

Thanks!

Step 1. Find total cost of purses & total cost of wallets
Total cost of purses = (3172 - 52) ÷ 2 = $1560
Total cost of wallets = 1560 + 52 = $1612

Step 2. Find cost of 1 unit of purses and 1 unit of wallets
He bought 2 units of wallets and 5 units of purses.

1 unit of purses costs 1560 ÷ 5 = $312
1 unit of wallets costs 1612 ÷ 2 = $806

Step 3. Find number of items in 1 unit
Difference between 1 unit of wallets and 1 unit of purses = $494
Difference between 1 wallet and 1 purse = $38
Number of items in 1 unit = $494 ÷ $38 = 13 items

Answer. Cost of 1 purse
Number of purses bought = 5 × 13 = 65 purses
Cost of 1 purse = $1560 ÷ 65 = $24

Answer. Total number of purses and wallets bought
Total number of purses and wallets bought = 7 × 13 = 91 items

marstolive:

P




http://i60.tinypic.com/2uhlhld.jpg\">


Anyone can solve this?

Exterior angles of a polygon = 360 degrees

360 * 2 = 720 degrees

Sum of interior angles of 5 triangles = 180 * 5 = 900 degrees

w + x + y + z = 900 - 720 - 39 = 141 degrees

marstolive:

Can someone enlighten me?



http://i62.tinypic.com/261ht8h.jpg\">


Tia

Hi marstolive, is that a school exam paper question? If you don't mind can you let me know which school is it from? Thanks.

Trevortan:

Pls help!

The distance between Town P and Town Q was 320 km. Mr Tan started travelling from Town P towards Town Q at 09 00. Mr Ong left Town P half an hour later than Mr Tan and travelled towards Town Q. Mr Tan's speed was 20km/h slower than Mr Ong's and at 11 30, the two motorists met. When Mr Ong was 70km away from Town Q, what was the distance between Mr Tan and him?

Ratio of time spent travelling on same distance before meeting
Mr Tan : Mr Ong = 2.5 : 2 = 5 : 4

Ratio of speed
Mr Tan : Mr Ong = 4 : 5
1 unit -> 20km/h
Mr Tan's speed = 80km/h
Mr Ong's speed = 100km/h

Mr Ong
Distance travelled = 320 - 70 = 250km
Time taken = 2.5hrs

Mr Tan
Time taken = 3hrs
Distance travelled = 3 * 80 = 240km

Difference = 250 - 240 = 10km

redruby:

http://i60.tinypic.com/2010e3o.jpg\">

Give a classification heading for the above.

My guess is that these animals are classified by their habitats.

Household, garden, pond, river

There's some overlap and ambiguity though.

[quote=\"S-H\"][quote=\"S-H\"]Hi, can someone pls help with the following qtn, thanks!


Alice bought some beads and gave 1/3 of them to Eve. Eve bought some stamps and gave 1/3 of them to Alice. Alice lost 32 beads AMD Eve lost 26 stamps. After that, the number of beads and stamps Alice had were in Raton 8:5 and the number of beads and stamps Eve had were in the ratio 3:2. How many beads did Alice buy?

Hi, can someone pls help the above qtn, million thanks!

Hi S-H, guest2013 has updated his post and his answer can be viewed at:

http://i62.tinypic.com/103wil4.jpg

I don't have enough posts yet to include images in my post, hope I can post images soon![/quote]

Thank you but I am still confused with your solution, is there other method of doing? :?[/quote]

Hi S-H, that is not my solution. The models and workings are the effort of guest2013. I'm only helping to repost.

Hi, can someone pls help with the following qtn, thanks!


Alice bought some beads and gave 1/3 of them to Eve. Eve bought some stamps and gave 1/3 of them to Alice. Alice lost 32 beads AMD Eve lost 26 stamps. After that, the number of beads and stamps Alice had were in Raton 8:5 and the number of beads and stamps Eve had were in the ratio 3:2. How many beads did Alice buy?

Hi, can someone pls help the above qtn, million thanks!

Hi S-H, guest2013 has updated his post and his answer can be viewed at:

http://i62.tinypic.com/103wil4.jpg

I don't have enough posts yet to include images in my post, hope I can post images soon!