Q&A - P3 Science

[J and J]

HAPPYH:

HAPPYH:

1) Is glass a man-made material or natural material?


Different books state differently. But I will go for man-made material. Glass is a man-made material made up of things that were obtained from the ground.

Again, I am not comfortable just to go and explain this to my DD as teacher may think differently. Hence decided to ask our experienced parents. Please share your views.

Thank you in advance.

[color=#4040BF]I would explain in term of whole pharses such as, if the question refer to glass material, then it is natural. But if it is refered as glass object ' like glass bottle or spectacles lenses, then it should be man-made.
\" A glass bottle is man-made object making up of glass material which is obtained from the nature (ground)[/color]
I know this question is discussed under Science assessment/guide books section few months ago. But any parent come across this kind of question in the school papers and what is the teacher's preffered answer?

http://www.kiasuparents.com/kiasu/forum/viewtopic.php?f=27&t=19568&hilit=glass+material&start=1690

Thank you.

[HAPPYH]

J and J:

HAPPYH:

[quote=\"HAPPYH\"]1) Is glass a man-made material or natural material?


Different books state differently. But I will go for man-made material. Glass is a man-made material made up of things that were obtained from the ground.

Again, I am not comfortable just to go and explain this to my DD as teacher may think differently. Hence decided to ask our experienced parents. Please share your views.

Thank you in advance.

[color=#4040BF]I would explain in term of whole pharses such as, if the question refer to glass material, then it is natural. But if it is refered as glass object ' like glass bottle or spectacles lenses, then it should be man-made.
\" A glass bottle is man-made object making up of glass material which is obtained from the nature (ground)[/color]
I know this question is discussed under Science assessment/guide books section few months ago. But any parent come across this kind of question in the school papers and what is the teacher's preffered answer?

http://www.kiasuparents.com/kiasu/forum/viewtopic.php?f=27&t=19568&hilit=glass+material&start=1690

Thank you.

[/quote]Thank you much. I understand this, but my DD did not catch the ball yet. I try to explain to her again.

[Charnic]

For P3, you just need to remember glass, plastic, polylester and fiber are man-made. The above is taken from TLL notes…

This is a common exam question…

[HAPPYH]

CNS:

For P3, you just need to remember glass, plastic, polylester and fiber are man-made. The above is taken from TLL notes..

This is a common exam question..

Thank you so much. I go and check what MS notes state.

[Sun_2010]

CNS:

For P3, you just need to remember glass, plastic, polylester and fiber are man-made. The above is taken from TLL notes..

This is a common exam question..

I feel this is right.
Glass is not found in nature directly. I can only be made thru a chemical process . So It should be considered a man-made material.

[HAPPYH]

Sun_2010:

CNS:

For P3, you just need to remember glass, plastic, polylester and fiber are man-made. The above is taken from TLL notes..

This is a common exam question..

I feel this is right.
Glass is not found in nature directly. I can only be made thru a chemical process . So It should be considered a man-made material.

Thank you so much.

[allcc6]

Need advice on the following questions under ‘Systems’ :


1. Function of the digestive system : Carries digested food needed by the body to all its parts.

True or false?



2. Which of the following human body systems show an increase in activity when a person is running?
A. muscular system
B. respiratory system
C. circulatory system

(1) A and B only
(2) A and C only
(3) B and C only
(4) A, B and C only

[J and J]

allcc6:

Need advice on the following questions under 'Systems' :


1. Function of the digestive system : Carries digested food needed by the body to all its parts.

True or false?



2. Which of the following human body systems show an increase in activity when a person is running?
A. muscular system
B. respiratory system
C. circulatory system

(1) A and B only
(2) A and C only
(3) B and C only
(4) A, B and C only

1. false
2. (4)

[AgonyMum]

Hi,

Can someone provide me with the names of some species of beetles that have a 4-stage life cycle (excluding the mealworm beetle)?
Thanks very much!

[mother777]

I think you may find some information in the below link


http://museumvictoria.com.au/bugs/life/cycles.aspx