Q&A - P3 Science

[atutor2001]

teh_oh:

atutor2001:

[quote=\"teh_oh\"]
....on a similar question, there is a picture of a mouldy bread and a bird's nest fern.
Q: State 2 similarities.
Answer Key: Both reproduce using spores and both are non-flowering plants. (these answers cannot be physically concluded from the picture and need background knowledge).
Child's Ans: Both use spores to reproduce and both need air, food and water to survive.

.....

Hi teh-oh

Is mould a plant? I thought it is a fungus.

Sorry, I rechecked the answers. Their answers are that both reproduce using spores; Both do not bear flowers.[/quote]Hi teh-oh

In my opinion, their answer \"both do not bear flowers\" is not acceptable because we cannot conclude \"bear\" from the picture i.e. maybe they can bear flowers but the picture happened to be taken after their flowers have been removed.

However, it will be ok to say that \"both do not have flower\" i.e. as shown in the picture.

I think characteristics of living things are also not ok because we cannot tell from a picture that something is alive.

[tianzhu]

teh_oh:

Can characteristics of living things be used for all questions relating to similarities of 2 living things, or must it be physical similarities observed from the picture given?

It depends on the context of the question. Sometimes, there are keywords leading you to the right direction.

For example.

1)Based on the pictures only. Write down one similarity and one difference between the body parts of the two animals. (Do not compare colour, shape and size).

2)From the diagram above, state one physical similarity between A and B.

teh_oh:

If the child state,'Both are living things and need air, food and water to survive', can it be considered as correct too?

Avoid using general statement like \"Both are living things and need air, food and water to survive\".

List down the similarities and differences in characteristics between the objects you are comparing.

Choose the characteristics that can be compared eg number of legs, body covering, type of movement and method of reproduction.

Look out for keywords guiding you in the question, if applicable,as shown in my earlier post.

Such questions on comparing are common in P3 science but the good news is you don’t see many such questions in upper primary science.

Best wishes

[teh_oh]

tianzhu:

teh_oh:

Can characteristics of living things be used for all questions relating to similarities of 2 living things, or must it be physical similarities observed from the picture given?

It depends on the context of the question. Sometimes, there are keywords leading you to the right direction.

For example.

1)Based on the pictures only. Write down one similarity and one difference between the body parts of the two animals. (Do not compare colour, shape and size).

2)From the diagram above, state one physical similarity between A and B.

teh_oh:

If the child state,'Both are living things and need air, food and water to survive', can it be considered as correct too?

Avoid using general statement like \"Both are living things and need air, food and water to survive\".

List down the similarities and differences in characteristics between the objects you are comparing.

Choose the characteristics that can be compared eg number of legs, body covering, type of movement and method of reproduction.

Look out for keywords guiding you in the question, if applicable,as shown in my earlier post.

Such questions on comparing are common in P3 science but the good news is you don’t see many such questions in upper primary science.

Best wishes

Tianzhu,
Once again, thank you very much for sharing.

[tianzhu]

teh_oh:

Once again, thank you very much for sharing.

Hi

You're welcome.

Best wishes

[teh_oh]

hi parents,

I wish to know if it is necessary\helpful to get a science dictionary. If yes, appreciate that you can recommend a good one. Thanks.

[CHC123]

Pls help on the below qrs:


Why is a dried leaf classified as a non-living thing and not a living thing?

A) It does not need sunlight
B) It cannot grow
C) It is unable to make food

(1) B only (2) A and B only
(3) B and C only (4) All of the above

Which is the correct ans? My ans given by the teacher was (1) cannot understand. Pls help? :?

[fatal-illuxions]

CHC123:

Pls help on the below qrs:


Why is a dried leaf classified as a non-living thing and not a living thing?

A) It does not need sunlight
B) It cannot grow
C) It is unable to make food

(1) B only (2) A and B only
(3) B and C only (4) All of the above

Which is the correct ans? My ans given by the teacher was (1) cannot understand. Pls help? :?

If you think it this way. it will make sense by using elimination method,
fungi, animals etc, non-plants, DO NOT NEED SUNLIGHT, and IS UNABLE TO MAKE THEIR OWN FOOD. but yet they are considered living things.

However, ALL LIVING THINGS CAN GROW, but whether or not a simple LEAF can grow, i do not know. i guess leaves grow too?

[teh_oh]

According to our science guidebook’s concept map, pineapples and bananas have no seeds. But according to the internet and our (my child and I) personal (other) reading/knowledge, both fruits have seeds. Any other guide books has information that confirm that the above fruits are generally categorised as seedless?

[tianzhu]

teh_oh:

According to our science guidebook's concept map, pineapples and bananas have no seeds. But according to the internet and our (my child and I) personal (other) reading/knowledge, both fruits have seeds. Any other guide books has information that confirm that the above fruits are generally categorised as seedless?

Hi teh_oh

Good Morning.

Which guidebook are you referring to?

How about your textbooks? Do they mention anything about classification by the number of seeds?

I vaguely remember that the old science textbooks mentioned about classification by the number of seeds into two categories --- one seed and more than one seed. There is no mention about classification under no seeds.

We don’t see seeds in the bananas and pineapples we eat; maybe, they are cultivated to be seedless. We can also see seedless grapes and watermelons in the supermarkets.

A good site to read more about bananas
http://bananasweb.com/bananas/Do+bananas+have+seeds%3F

Another question which guidebooks and websites may give different answers ------ Is paper a natural or manmade material?

I suggest you write to your child’s science teacher to find out how they are classified in the science syllabus.

Best wishes

[teh_oh]

tianzhu:

teh_oh:

According to our science guidebook's concept map, pineapples and bananas have no seeds. But according to the internet and our (my child and I) personal (other) reading/knowledge, both fruits have seeds. Any other guide books has information that confirm that the above fruits are generally categorised as seedless?

Hi teh_oh

Good Morning.

Which guidebook are you referring to?

How about your textbooks? Do they mention anything about classification by the number of seeds?

I vaguely remember that the old science textbooks mentioned about classification by the number of seeds into two categories --- one seed and more than one seed. There is no mention about classification under no seeds.

We don’t see seeds in the bananas and pineapples we eat; maybe, they are cultivated to be seedless. We can also see seedless grapes and watermelons in the supermarkets.

A good site to read more about bananas
http://bananasweb.com/bananas/Do+bananas+have+seeds%3F

Another question which guidebooks and websites may give different answers ------ Is paper a natural or manmade material?

I suggest you write to your child’s science teacher to find out how they are classified in the science syllabus.

Best wishes

Hi Tianzhu,
Thanks for the information.
The guidebook that my child showed me is the EPH Ultimate Science Guide. Their Overview Concept Map classify fruits into No Seed, One Seed, Few Seeds and Many Seeds.
I have yet to check his textbook (My Pals). Will do so. Thanks.