Wednesday, 18 January 2012

Algebra Change of Subject 2

In the previous lesson, you have uncovered the implication of 'change of subject' and the processes involved.

Task 1
collaborative work

using TI-Nspire to

build your foundation on the key concept using examples presented in a collaborative environment.






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Task 2
Pair work

based on the activity in task 1, reflect on the processes involved and write it down on your worksheet 5.
Identify at least 2 points for consideration for 'Change of Subject'.
You may discuss with a partner in class.
Submit this at the end of the lesson.

reference:
Worksheet 5, ACE learning.

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Task 3
individual work

Extension of understanding on Change of Subject

Identify a formula in other subject areas (other than Mathematics)
- define which subject area the formula is applied and what the formula is about
- define all the variables used
- identify a variable (other than the one presented) to make a subject.
(ensure that this is possible)
[post this as a comment - do not include your solution[

example:
Subject: Physics
This formula is about the motion (movement) of an object
v = u + as
v - final velocity
u - initial velocity
a - acceleration of object
s - displacement
Question:
Make a the subject of the formula.

29 comments:

  1. abiyyu arif rahman1/19/2012 10:49 am

    Arithmetics Error - division
    transfer error - plus/minus sign

    ReplyDelete
  2. Task 2
    transfer error - positive/negative indication
    arithmetics error - division of the incorrect terms

    ReplyDelete
  3. 1) Try to avoid arithmetic errors such as failing to multiply or divide correctly, resulting in deriving the wrong answer.
    2) When carrying signs (+,- etc.) to the other side of the equals to sign, change the symbols

    Done with Ada.

    ReplyDelete
  4. Subject: Physics and Astronomy
    This formula is about the amount of energy is the amount of mass a body has.
    E = mc^2
    E - Energy
    m - Mass
    c - Speed of light

    Question:
    c=√E/m

    ReplyDelete
  5. 1) There is an error about the misconception that x+4=q (q) is actually q+4=x.
    2) The second error is actually an error about dividing error of incorrect terms

    ReplyDelete
  6. Arithmetic error-division
    Transfer error-forgot to change the sign when transferring to the other side.
    (Done with Kang Xiong)

    E=mc^2

    E=energy
    m=mass
    c=speed of light

    ReplyDelete
  7. Task 2:
    Arithmetic error division of the wrong terms
    Transfer error: plus/minus sign is confused

    Task 3
    Geography
    R/r
    R=Rise
    r=run

    ReplyDelete
  8. Task 2 (Sylvia)
    Transfering error - negative and positive places

    ReplyDelete
  9. Task 2
    Arithmetic errors like the incorrect division and the wrong results from a certain equation as well as errors such as transferring of wrong signs as well as positive and negative signs.

    Done with Desiree

    ReplyDelete
  10. Task 2
    Esther Tiey:
    Transfer error - plus/minus sign
    Suppose to divide but multiples.

    ReplyDelete
  11. Task 3
    Physics
    Distance = Speed x time
    Fine Speed

    ReplyDelete
  12. Task 2

    When dividing, make sure that you also divide the other side of the statement.

    When transferring subjects, make sure that you change the signs.

    ReplyDelete
  13. Transfer errors. (-) Negative and (+) Positive.
    Arithmetics Error. Division, Multiplication, etc.

    ReplyDelete
  14. Errors:
    Transferal Error: For example: x=3b+4
    x+3b=4 (When the person transferred 3 over, he forgot to switch the sign to minus.)

    Arithmetic Error: Some people are just careless and does some of the operations wrongly.

    ReplyDelete
  15. Task 2

    Transfer errors. (-) Negative and (+) Positive.
    Arithmetics Error. Division, Multiplication, etc.
    Done with Daniel.

    ReplyDelete
  16. Task 2
    Done with Jasmine
    1) Miscopied
    2) Left out alphabets
    3) Forgot to multiply/divide
    4) Wrong usage of signs
    5) Moving mistake, instead of +/- becomes the other way around

    ReplyDelete
  17. Adil, Mateen, Kenneth
    2 Considerations/Errors:
    1. Arithmetic error, eg. Forgot to divide both sides by the same value
    2. Transfer error, eg. + was not converted to - when changed sides

    ReplyDelete
  18. Task 3

    Distance = Speed x Time

    Make Time the subject

    ReplyDelete
  19. Task 3
    Chemistry:
    CO+O₂=CO₃
    Make O₂ the subject

    ReplyDelete
  20. Boon Pin & Boon Pin Task 2:
    Crossover:
    1) + ➔ -
    2) - ➔ +
    3) × ➔ ÷
    4) ÷ ➔ ×

    Remember to factorize and group like terms, it helps

    ReplyDelete
  21. Physics
    G = mgh

    G - Gravitational Potential Energy
    m - mass
    g - gravitational field strength
    h - height

    Make the subject the height.

    ReplyDelete
  22. Task 3:
    Gravity: mgh
    mass × gravity force × height


    High Score + Mr Johari = Starbucks for free =)

    ReplyDelete
  23. Task 3:
    Physics:
    KE=(1/2)(m)(v^2)

    KE=Kinetic Energy
    m= mass
    v=velocity

    Find the velocity

    ReplyDelete
  24. Phsyics:
    Moment
    FxPerpendicular Distance = M

    ReplyDelete
  25. Task 3:
    Energy
    KE=(1/2)mv^2
    make v the subject

    ReplyDelete
  26. Speed of an object is Distance/time
    making speed as the subject

    ReplyDelete
  27. Speed = Distance / Time

    Make time the subject.

    ReplyDelete
  28. Physics
    G = MGH
    Mass x gravity force x height

    Make mass the subject

    ReplyDelete
  29. Distance = speed x time

    make time the subject

    ReplyDelete