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.

collaborative work

using TI-Nspire to

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

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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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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.

1. Subject : Physics
This formula is about the calculation of Force in and object

F=MA

F -> Force
M -> Mass
A -> Acceleration

Question

Make A the subject of the formula

2. Task 3, Chelsea Elia. (02) of Class S207

Subject: Physics
This formula is about the density: the ratio of mass to volume
D = m/v
D: density
m: mass
v: volume

Question:
Make v the subject of the formula.

3. Subject: Physics
This formula is about the calculation of the speed of an object
S= D/T
D=Distance
S= Speed
T=Time

Question: Make T the subject of the formula

4. Subject: Physics
This formula is to find the electric field and magnetic field relationship for an electromagnetic wave (only EM wave)
E=cB

E= Loop produced by electric currents
B= Magnetic field produced by loop current
c= The constant
Question: Make c the subject

5. Subject: Physics
This formula is about the gravitational potential energy of an object.
GPE = m x g x h
GPE = gravitational potential energy
m = the mass of the object (kg)
g = gravitational field strength (on earth that is 9.81 ms-2)
h = height of object (h)

Question: Make h the subject of the formula.

6. Subject: Physics
This formula is about finding the resistance in electricity, of which the unit is Ohms.
R = V/l

R= Resistance
V= Voltage
l= Current in amps

Question: Make V the subject of the formula.

7. Subject: Physics
This formula is to find the Momentum which is the quantity of motion in an object.
p=mv
p-Momentum
m-mass of object
v-velocity of object
Question:
Make m the subject of the formula.

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10. Subject: Physics
This formula is about the acceleration due to gravity outside the Earth
g' = (re^2 / r^2) g
g' - gravity
r - radius outside the earth
g - Earth's surface
Question:
Make r the the subject of the formula

11. Subject: Physics

The formula for kinetic energy of a object
KE=1/2 mv^2
m= mass
v= velocity
Question: Make m the subject

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13. Subject: Physics

The formula is to find the energy in matter
E=mc^2
E=Energy
m=Mass
c^2=light square
Make m the subject

14. Subject: Physics

The formula Impulse,  this is the change in the momentum of a body caused over a very short time.
Impulse = Ft = mv - mu
m= mass
v = final velocity
u = initial velocities

Make m be the subject of equation.

15. Subject: Physics

The formula for calculating acceleration of an object
v2 = u2 + 2as
v = final velocity
u = initial velocity
a = acceleration
s = distance travelled
Make s the subject

16. Subject:Physics

The formula for the potential energy of an object
PE = mgh
PE = Potential Energy
m = Mass of object
g = Acceleration of Gravity
h = Height of object

Make g the subject

17. Subject: Physics

The formula is to find Elastic Potential Energy
EPE= ½k L 2
EPE=Elastic Potential Energy
k=spring constant
L=is the length of the spring

Make L the subject

18. A=Pi x r x r
A= Area
Question
Make r the subject

19. Subject: Physics
The formula is to find Gravitational Potential Energy.
GPE =mgh
m= mass
g= gravitational force
h= height

Question: Make h the subject

20. Subject: Physics

The formula is to find the weight of an object
W = mg
W = weight
m = mass
g = gravitational field strength

Question
Make g the subject

21. Subject: Physics
Speed= Distance ÷ Time Taken
Make The Time Taken the Subject :D

22. Subject: Physics
The formula to find energy

e=mc^2

e is energy
m is mass
c is speed of light

Make the speed of light the subject

23. Subject: Physics
This formula is to calculate kinetic energy
KE=1/2mv^2
KE->Kinetic energy
m->mass
v->speed(velocity)

Question:
Make Speed(velocity) the subject.