Q&A - PSLE Science

[starlight1968sg]

tianzhu:

Hi starlight1968sg


I hope I am referring to the right question, Q11 from MGS P5 SA2 2009.
http://www.orlesson.org/orp/09Sc/2009-Sc-SA2-MGS.pdf

In the topic on Skeletal System, primary students learnt that a joint is a place where two bones are connected. There are two different types of joints, fixed (immovable) joints and movable joints.

An example of fixed joints is those that are found in the skull. Two different kinds of movable joints are covered in the syllabus, they are hinge joint( elbows. Knees, fingers, toes) and ball and socket joint (shoulders and hips)

With this information, we should be able to answer Q11; the answer is option (3)

Best wishes

Thanks, and Sonshine who have replied.
Yes, I know movable and immovable joints.
Guess I have to read up more about these movable joints to know their differences.

[MOE Hater]

Corect me if I am wrong......The ball and socket joints allows bones to move intwo directions while the hinge joint can move only one direction? :idea:


MTIA :?:

[starlight1968sg]

MOE Hater:

Corect me if I am wrong......The ball and socket joints allows bones to move intwo directions while the hinge joint can move only one direction? :idea:


MTIA :?:

Yes, I am confused with the number of directions the movable joints can move.

[Nebbermind]

you can get some help http://www.bbc.co.uk/science/humanbody/body/factfiles/joints/hinge_joint.shtml

[starlight1968sg]

Nebbermind:

you can get some help http://www.bbc.co.uk/science/humanbody/body/factfiles/joints/hinge_joint.shtml

Thanks a lot; very useful info from the link:

Ball and socket joints, like your hip and shoulder joints, are the most mobile type of joint in the human body. They allow you to swing your arms and legs in many different directions.

Hinge joints, like in your knee and elbow, enable movement similar to the opening and closing of a hinged door.

Option 3 in that question becomes very obvious.

[PSLEmom]

Isn’t Skeletal system excluded for this year’s PSLE?

[tianzhu]

Hi


An interesting letter from a mother in todayonline.

I REFER to the letter by Chan Wai Piew on the rigidity of schools' marking criteria, \"Incomprehensible comprehension\" (Aug 11), and wish to share my similar experience.

My son is appearing for the PSLE exams this year and last month, I attended his school's briefing for parents. During the Science session, the teacher highlighted that, in answering short questions, students can only give their explanation in relation to their selected answer.

So for example, in an experiment showing two kettles with same volume of water, where kettle A is placed on a bigger flame surface than kettle B, the question asked would be: Which kettle of water will boil first, and why?

The answer most students would give would be kettle A. But the explanation would be considered correct and marks awarded only if the students say that kettle A was subject to a bigger burning surface. Students who explain that kettle B was subject to a smaller burning surface area would not be given marks.

In the English session, the teacher in-charge told us that when the students transform a sentence which contains the word \"yesterday\", the term to use in its place must be \"the previous day\".

A phrase that's typical used, \"the day before\", would no longer be accepted, we were told.

Despite seeking clarification from the teacher, I am still not able to comprehend the rigid rationale of the marking system.

Why should we hinder the creativity of young minds when they are still answering to the point and giving the correct analysis?

http://www.todayonline.com/Voices/EDC100813-0000042/When-a-right-answer-is-wrong

Best wishes

[starlight1968sg]

tianzhu:

Hi


An interesting letter from a mother in todayonline.

I REFER to the letter by Chan Wai Piew on the rigidity of schools' marking criteria, \"Incomprehensible comprehension\" (Aug 11), and wish to share my similar experience.

My son is appearing for the PSLE exams this year and last month, I attended his school's briefing for parents. During the Science session, the teacher highlighted that, in answering short questions, students can only give their explanation in relation to their selected answer.

So for example, in an experiment showing two kettles with same volume of water, where kettle A is placed on a bigger flame surface than kettle B, the question asked would be: Which kettle of water will boil first, and why?

The answer most students would give would be kettle A. But the explanation would be considered correct and marks awarded only if the students say that kettle A was subject to a bigger burning surface. Students who explain that kettle B was subject to a smaller burning surface area would not be given marks.

In the English session, the teacher in-charge told us that when the students transform a sentence which contains the word \"yesterday\", the term to use in its place must be \"the previous day\".

A phrase that's typical used, \"the day before\", would no longer be accepted, we were told.

Despite seeking clarification from the teacher, I am still not able to comprehend the rigid rationale of the marking system.

Why should we hinder the creativity of young minds when they are still answering to the point and giving the correct analysis?

http://www.todayonline.com/Voices/EDC100813-0000042/When-a-right-answer-is-wrong

Best wishes

Yes, I was told and simply do not understand why \"the day before\" would no longer be accepted.

Yes, for Science, the ability to answer in a manner acceptable to the examiners is the key to score high marks now. This is so sad!

[tianzhu]

PSLEmom:

Isn't Skeletal system excluded for this year's PSLE?

Hi

I think the best person to check for the updated syllabus is your kid’s teacher.

You may also wish to refer to MOE’s website for the syllabus.
http://www.moe.gov.sg/education/syllabuses/sciences/files/science-primary-2008.pdf

There is also a good summary from Punggol Primary School.
http://www.punggolpri.moe.edu.sg/cos/o.x?c=/wbn/pagetree&func=view&rid=15664

Best wishes

[tianzhu]

starlight1968sg:

Yes, for Science, the ability to answer is a manner acceptable to the examiners is the key to score high marks now.

Hi

How do students overcome the challenges to come up with complete and accurate answers?

How does one phrase and write answers expected by examiners?

For the benefits of PSLE 2010 students,it would be useful for members to share some of their thoughts.

Best wishes