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.

20 comments:

  1. Subject: Physics
    This formula is is about Moment of a force.

    M=F x D

    M- Moment of a force
    F-Force applied
    D- Perpendicular distance from the pivot to the line of action.

    Make D the subject of the formula.

    ReplyDelete
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  4. Subject: Physics
    This formula is about the mass–energy equivalence, the concept that the mass of a body is a measure of its energy content.

    E = mc²

    E - Energy of the object
    m - Mass of the object
    c² - Square of the velocity of light

    Make "m" the subject of the formula.

    Resources: http://www.youtube.com/watch_popup?v=CC7Sg41Bp-U&vq=small

    ReplyDelete
  5. Subject: Physics
    This formula is about the volume of a cuboid.

    V = hwl

    V - Volume
    h - Height
    w - Width
    l - Length

    Question: Make w the subject of the formula.

    ReplyDelete
  6. Subject: Physics
    This formula is about the laws of motion.

    F=m x a

    F-Force
    m-mass
    a-acceleration

    Make "a" the subject of the formula.

    ReplyDelete
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  9. Subject:Physics
    This formula is about Density

    D=m/V
    M=Mass
    V=Volume
    Question: Make v the formula of the subject

    ReplyDelete
  10. Subject: Physics
    This formula is to find out the energy of an object.
    E=mc²
    E - energy
    m - mass
    c - speed of light

    Question: Make 'm' the subject.

    ReplyDelete
  11. L=4∏d^2b
    L = luminosity in W
    d = distance in meters
    b = brightness in W/m^2

    make b the subject

    ReplyDelete
  12. Subject: Physics
    This formula is about the circular motion

    v= tangential velocity
    a= centripetal acceleration
    f= centripetal force
    r= radius

    a = v2 / r

    F = ma = mv2/r

    ReplyDelete
  13. Subject:Physics
    This formula is about the Theory of a right angle triangle (Pythagorean theorem for a right triangle)

    a²+b²=c²

    C -> Longest side
    A & B -> Two other sides

    Question: Make 'b' the subject of the formula
    References: http://www4.ncsu.edu/~kaltofen/top10eqs/top10eqs.html

    ReplyDelete
  14. Subject: Physics
    This formula is about work done.

    W= F x D

    W: Work Done
    F: Force
    D: Distance

    Make F the subject

    ReplyDelete
  15. Subject: Physics
    This formula is about pressure

    v^2/2 + gz + p/d

    V is the fluid flow speed at a point on a streamline,
    G is the acceleration due to gravity,
    Z is the elevation of the point above a reference plane, with the positive z-direction pointing upward – so in the direction opposite to the gravitational acceleration,
    P is the pressure at the chosen point, and
    D is the density of the fluid at all points in the fluid.

    ReplyDelete
  16. Subject: Physics
    This formula is to find One dimensional motion

    v = u + at

    v2 = u2 + 2as

    s = ut + 1/2 at^2

    average velocity = (v + u)/2
    -------------------------------------------
    u= Initial Velocity
    v= Final Velocity
    a= Acceleration
    s= Distance Travelled
    t= Time elapsed

    Information from: http://tutor4physics.com/formulas.htm

    ReplyDelete
  17. Subject: Physics
    Laws of Motion

    F=M x A

    F- Force
    M- Mass
    A- Acceleration

    Question: Make 'M' the subject of the formula?

    ReplyDelete
  18. Volume

    LxBxH=V
    L=Length
    B=Breath
    H=Height
    V=Volume
    Make B the subject of the question

    ReplyDelete
  19. Subject: Physics
    This formula is about Momentum

    p = mv

    p = The momentum
    m = The mass
    v = The velocity

    Make v the subject of the formula.

    ReplyDelete
  20. Subject: Chemistry
    This formula is about hydrocarbon

    C+H4=CH4

    ReplyDelete