Monday, 20 January 2014

Review: Topic 1

I would like everyone to review through the following workings done by your fellow schoolmates. In each case, you are required to state what went wrong and provide a solution.

QUESTIONS TO PONDER:

  1. Has the student answered to the question? If not, what's wrong in the way the answer is presented?
  2. Is the overall working clearly presented to demonstrate the student knows what he/she needs to find? If not, how could the working/ presentation be improved?


Case 1:


Case 2:


Case 3:


Case 4:


Case 5:



Remember to state CASE NUMBER, PROBLEM & SOLUTION for each question here. I will only allow ONE comment from each student.

15 comments:

  1. CASE1: It depends on the question, if it's asking for prime factors then the answer is 2^3x7x11x13 but if it is asking for factors then the answer should be presented in the form of multiplication.

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  3. Case1: He should put his form of answer (8008= 2 to the power of 3 x 7 x 11 x 13) like you taught us to put our answers in.

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  5. Mr Desmond it Would be easier and more clear if you also posted the questions for each case.

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  9. Case 1: The working should be presented clearly using the 'L' method.

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  10. Case 1: The student did not present the answer in terms of products.
    Case 2: The student did not state what does he want to find out for each statement and his answers should be express in index notation.
    Case 3:There was unnecessary usage of brackets
    Case 4:The student had wrong presentations of answer and he should express his answer properly. (e.g. The prime factors of 8008 are ...)
    Case 5:The student did not arrange the numbers in order when doing prime factorization and he also had the wrong presentations of answer similar to case 4.

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  11. Case 1:The student has not answered to the question.The student should not be answering in terms of factors,he should answer using index notation like ->8008=2^3x7x11x13.

    Case 2The student has not answered to the question.He did not state if he was looking for the hcf or lcm of the number.Instead of putting the number at the back,he should do it like this ->Hcf of 8008=2^3x7x11x13.

    Case 3:The student has not answered to the question.The student did not answer using the correct presentation method.He should do it like this -> 3^2x5x7

    Case 4:The student has not answered to the question.The student did not state what he is finding and he used the wrong presentation method.He should do something like this -> 8008=2^3x7x13

    Case 5:The student has not answered to the question.He should start from the lowest prime factor first,going from above to downwards.He also presented his answers wrongly.He should do something like this instead -> 2^3x7x11x13.

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  12. Case 1: The student could use the normal way we should do our working(e.g. 1x8008=8008) so that it is presented more clearly.
    Case 2:The student could do the proper way(e.g. 8008=2^3x7x11x13) so that the teacher will know what he is finding.
    Case 3: There need not be any bracket as it is commutative and the equation will still be the same with or without the brackets. He could cancel the brackets and add 'x' in the space of the first bracket.
    Case 4:There was no need for the brackets as it is also a commutative equation and the equation would still be the same with or without the brackets.
    Case 5: The student did not use the next lowest prime factor he could use to divide the main number so the working at the end was very messy and not in ascending order or if not he could use this method just that he should arrange the numbers such that the numbers are in ascending order.

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  13. Case 5
    The person should have wrote the numbers or bases in ascending order
    The person should have written '8008=2 to the power of 3 x 7 x 11 x 13'

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  14. Case 1: The student should have presented the answer in index notation.
    Case 2: The student did not specify what he was trying to find out.
    Case 3 & 4: The student used the brackets inappropriately.
    Case 5: The student did not arrange the numbers from smallest to largest in his/her answer.

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  15. All the pupils from case 1 to 5 all did not write the 'L' method template correctly.
    For case one,the pupil should use the multiplication sign,instead of the comma .The pupil should be clearer when presenting the answers.For the pupil from case 2,the pupil did not present answer properly. This shows that he does not understand the meaning of index notation.For case three,the pupil should write his answer statement and the brackets are not needed.For case four,the pupil's way of presenting his work is wrong he should label it either HCF or LCM -highest common factor or lowest common multiple.The pupil should not have written the brackets too .For case five, the pupil should write either HCF or LCM to present his answers .

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