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[read this] How do i do well for 'O's Tips and Advice please

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  • SBS n SMRT's Avatar
    4,506 posts since Mar '08
    • Good essay, but in chem textbook, and bio textbook, photosynethesize eqn different, in chem reactants is 6H20, pdts no H20 (aka H20 cancel out), while in bio we learn that the H20 in reactants and pdts are used and form in the r(x)s and thus not spectator ions...

  • Moderator
    H2 Chemistry @ BedokFunland JC (near VJC & TJC)
    UltimaOnline's Avatar
    11,784 posts since May '05
    • Originally posted by SBS n SMRT:

      Good essay, but in chem textbook, and bio textbook, photosynethesize eqn different, in chem reactants is 6H20, pdts no H20 (aka H20 cancel out), while in bio we learn that the H20 in reactants and pdts are used and form in the r(x)s and thus not spectator ions...


      It appears you missed my point.

       

      The textbooks are NOT the authority. They do NOT speak for Chemistry and Biology. They are merely individual efforts by individual authors to convey concepts to students.

       

      Everything you read in your 'O' level Chem and 'O' level Bio textbooks, are oversimplified. If you insist on being technical, much of what you read in them are actually wrong, but they are 'correct' for 'O' levels, which by definition is extremely basic and oversimplified.

       

      So what you read about photosynthesis, about respiration, in your 'O' level Chem & Bio textbooks, all actually fall short of the true picture.

       

      Whatever your 'O' level Chem textbook book says about photosynthesis or respiration, is simply trying to convey a point, a concept, about Chemistry, to you (the student), and by itself does not accurately describe photosynthesis or respiration (you need to study these in the University to get a proper understanding, or at least 'A' levels for a preview).

       

      Whatever your 'O' level Bio textbook book says about photosynthesis or respiration, is simply trying to convey a point, a concept, about Biology, to you (the student), and does not accurately describe photosynthesis or respiration (you need to study these in the University to get a proper understanding, or at least 'A' levels for a preview).

       

      You will understand better what I mean when you study at a higher level.


      In the meantime, use the textbooks (or school notes!) only as a learning tool, not as any dogmatic authority.

       

    • Originally posted by SBS n SMRT:

      Good essay, but in chem textbook, and bio textbook, photosynethesize eqn different, in chem reactants is 6H20, pdts no H20 (aka H20 cancel out), while in bio we learn that the H20 in reactants and pdts are used and form in the r(x)s and thus not spectator ions...


      To summarize once again :

       

      The conflict isn't between Chemistry and Biology (because there is none)..

      The conflict is between your Chemistry textbook and your Biology textbook.

      See the difference?

       

       

  • Moderator
    eagle's Avatar
    23,316 posts since Aug '01
    • Most of what the O level textbooks says for physics is also wrong or insufficient information.

      As what ultimaonline has said, it is overly simplified.

  • SBS n SMRT's Avatar
    4,506 posts since Mar '08
  • Shikraiser's Avatar
    5 posts since Mar '09
    • yeap , my teacher won't touch the textbook .. not even once .. all we have are compiled notes written by the teachers for us .

      and also i read about the bellcurve .. let's not discuss or try to assume the bellcurve percentage marks but can anyone like give me a range for what's safe to score for these few subjects pls .

      English A2 .. originally 70-75 ..

      Maths A2 (as above)

      and Sci B3 (65-70)

      i'm trying to do a goal setting for myself .. just a safe range will do .

      it would be of great help ! thanks alot in advance ..

      Edited by Shikraiser 22 Mar `09, 2:13AM
  • SBS n SMRT's Avatar
    4,506 posts since Mar '08
  • Moderator
    eagle's Avatar
    23,316 posts since Aug '01
    • Originally posted by Shikraiser:

      yeap , my teacher won't touch the textbook .. not even once .. all we have are compiled notes written by the teachers for us .

      and also i read about the bellcurve .. let's not discuss or try to assume the bellcurve percentage marks but can anyone like give me a range for what's safe to score for these few subjects pls .

      English A2 .. originally 70-75 ..

      Maths A2 (as above)

      and Sci B3 (65-70)

      i'm trying to do a goal setting for myself .. just a safe range will do .

      it would be of great help ! thanks alot in advance ..

      If I remember correctly, A2 for E maths last year was estimated to be about 82 marks, and A1 about 87 marks, as estimated by our fellow forumer, Mikethm

       

  • Mikethm's Avatar
    322 posts since May '08
    • Actually that was estimate for A Math as I only track my students' estimated scores for A Math . E Math is too hard to guage accurately due to paper 1 which cannot be estimated as the questions/solutions are not available accurately immediately after the exams.

      But nevertheless, you definitely need >80% or thereabout for an A2.

  • sgstudent09's Avatar
    5 posts since Apr '09
    • Hi, are there any good guidebooks/assesments for physics O level, besides TYS?

      I am currently in sec3 and even though I think I have already revised enough before a test, the results I get are quite average. HELP, please? Thanks so much.

  • Moderator
    eagle's Avatar
    23,316 posts since Aug '01
    • hi sgstudent

      I particularly like this book

      Conceptual Physics for O levels
      It is a red coloured book. As for the publisher, I will have to get back to u tmr cuz I left the book in office

      In addition, this book is a good supplement. Challenging Drill Questions, Questions from top schools. There are a ton of questions inside for practice, and I think it is quite good. The solution book is sold separately, and is quite expensive. But the questions book is at an acceptable price.

      Finally, do visit ExamWorld and see if it could help you a bit. It's my website, but haven't had much time to update it recently. Also, visit S-cool Revision, a UK website which is quite good as well.

  • sgstudent09's Avatar
    5 posts since Apr '09
    • Hi eagle,thanks for the recommendations. Coincidentally(and fortunately), I just bought the Conceptual Physics book yesterday, is the publisher GLM? I haven't heard of this publisher before.

      I saw Challenging Drill questions(by cosmic services/yellow reef limited?) as well, it costs $50+, the price's kind of steep, so i didnt buy. But if it's really good, then i would exchange the Conceptual book with Challenging Drill.

      My friend's teacher suggested Longman Structured Questions and I have seen people using the other versions (mcqs, revision guide etc), any opinions on Longman? And has anyone heard of Red Dot?

      Besides physics, does anyone have any good books in mind for bio and chem? THANK YOU :)

       

  • Moderator
    eagle's Avatar
    23,316 posts since Aug '01
    • yep, it's by yellowreef/cosmic something... $50+ is the solutions book... which if u dun really need if u know how to do... The questions book is about $24 I think...

      my sis is using yellow reef for A lvl physics and maths, both questions and solutions book... For o levels, I use the questions book to give tuition. So I can say, it is good.

      Not very sure about longman.

       

      For chem and Bio, I will leave it to UltimaOnline, our resident chem and bio specialist to recommend you

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