rpt phy f4 2012

7/28/2019 RPT PHY F4 2012

1/20

7/28/2019 RPT PHY F4 2012

2/20

2/20

WeekLearning

ObjectiveLearning Outcomes Suggested Activities Notes

express derived quantities as well astheir units in terms of base quantities

and base units.

solve problems involving conversion ofunits

Determine the base quantities( and units) in a givenderived quantity (and unit) from the related formula.

Solve problems that involve the conversion of units.

3

16- 20Jan 2012

1.3

Understanding scalarand vector quantities

A student is able to:

define scalar and vector quantities give examples of scalar and vector

quantities.

Carry out activities to show that some quantities can

be defined by magnitude only whereas other quantities

need to be defined by magnitude as well as direction.

Compile a list of scalar and vector quantities.

4

23 - 27

Jan 2012

CUTI TAHUN BARU CINA

5

30 Jan - 3Feb2012

1.4

Understandingmeasurement

A student ia able to

Measure physical quantities usingappropriate instruments

Explain accuracy and consistency

Explain sensitivity Explain types of experimental error

Use appropriate techniques to reduceerrors

Choose the appropriate instrument for a given

measurement

Discuss consistency and accuracy using the

distribution of gunshots on a target as an example

Discuss the sensitivity of various instruments

Demonstrate through examples systematic errors and

random errors.

Discuss what systematic and random errors are.

Use appropriate techniques to reduce error in

measurements such as repeating measurements to find

the average and compensating for zero error.

7/28/2019 RPT PHY F4 2012

3/20

3/20

WeekLearning


6

6 - 11

Feb 2012

1.5 Analysing scientific

investigations


Identify variables in a given situation Identify a question suitable for

scientific investigation

Form a hypothesis Design and carry out a simple

experiment to test the hypothesis

Record and present data in a suitableform

Interpret data to draw a conclusion Write a report of the investigation

Observe a situation and suggest questions suitable fora scientific investigation. Discuss to:

a) identify a question suitable for scientificinvestigation

b) identify all the variablesc) form a hypothesisd) plan the method of investigation including selection

of apparatus and work procedures

Carry out an experiment and:

a) collect and tabulate datab) present data in a suitable formc) interpret the data and draw conclusionsd) write a complete report

PEKA 1:

Experiment: To study the

relationship between length

of pendulum and period of

oscilation.

LEARNING AREA: 2. FORCES AND MOTION

WeekLearning


7

13 - 17

Feb 2012

2.1 Analysing linear

motion


Define distance and displacement Define speed and velocity and state

thatt

sv

Define acceleration and decelerationand state that

t

uv

a

Calculate speed and velocity Calculate acceleration/decelerationSolve problems on linear motion with

uniform acceleration using

Carry out activities to gain an idea of:a) distance and displacementb) speed and velocityc) acceleration and decelerationCarry out activities using a data logger/graphing

calculator/ticker timer toa) identify when a body is at rest, moving

with uniform velocity or non-uniformvelocity

b) determine displacement, velocity and accelerationSolve problems using the following equations of

motion:

atuv

Average speed = total distance/ time taken

7/28/2019 RPT PHY F4 2012

4/20

4/20

WeekLearning


atuv 2

2

1atuts

asuv 222

22

1atuts

asuv 222

8

20 - 24

Feb 2012

2.2

Analysing motion graphs


plot and interpret displacement- timeand velocity-time graphs

deduce from the shape of adisplacement-time graph when a body

is:i. at rest

ii. moving with uniform velocityiii. moving with non-uniform velocity

determine distance, displacement andvelocity from a displacement timegraph

Carry out activities using a data logger/graphingcalculator/ ticker timer to plot

a) displacement-time graphsb) velocity-time graphsDescribe and interpret:a) displacement-time graphsb) velocity-time graphsDetermine distance, displacement velocity and

acceleration from a displacement time and velocity

time graphs.

Reminder

Velocity is determined from

the gradient of

displacement time graph.

Acceleration is determinedfrom the gradient of

velocity time graph

9

27 Feb

3 Mac 2012


deduce from the shape of velocity-time graph when a body is:a. at restb. moving with uniform velocityc. moving with uniform

acceleration

determine distance, displacementvelocity and acceleration from a

velocitytime graph

solve problems on linear motion withuniform acceleration.

Solve problems on linear motion with uniformacceleration involving graphs.

Distance is determined fromthe area under a velocity time

graph.

10

5 - 9

Mac 2012

UJIAN BULANAN 1 DAN PEMBETULAN UJIAN

7/28/2019 RPT PHY F4 2012

5/20

5/20

WeekLearning


11

10 18

Mac 2012

CUTI PERTENGAHAN PENGGAL

12

19 - 23

Mac 2012

2.3 Understanding

Inertia

A student is able to: explain what inertia is relate mass to inertia give examples of situations involving

inertia

suggest ways to reduce the negativeside effects of inertia.

Carry out activities/view computer simulations/situations to gain an idea on inertia.

Carry out activities to find out the relationshipbetween inertia and mass.

Research and report on

a) the positive effects of inertia

b) ways to reduce the negative effects of inertia

Newtons First Law of Motion

maybe introduced here.

13

26 - 30

Mac 2012

2.4 Analysing

momentum


define the momentum of an object define momentum p as the product

of mass (m) and velocity (v) i.e.mvp

state the principle of conservation ofmomentum

describe applications of conservationof momentum

solve problems involving momentum

Carry out activities/view computer simulations to gainan idea of momentum by comparing the effect of

stopping two objects:

a) of the same mass moving at different speedsb) of different masses moving at the

same speeds.

- need to be emphasized different

Direction

Discuss momentum as the product of mass andvelocity.

View computer simulations on collision and explosions

to gain an idea on the conservation of momentum

Conduct an experiment to show that the total

momentum of a closed system is a constant

Carry out activities that demonstrate the conservationof momentum e.g. water rockets.

Research and report on the applications of

conservation of momentum such as in rockets or jetengines.

Solve problems involving linear momentum

ReminderMomentum as a vector quantity

needs to be emphasized in

problem solving

7/28/2019 RPT PHY F4 2012

6/20

6/20

WeekLearning


14

2 6

Apr 2012

2.5 Understanding the

effects of a force


describe the effects of balancedforces acting on an object

describe the effects of unbalancedforces acting on an object

determine the relationship betweenforce, mass and acceleration i.e. F =ma.

Solve problem using F = ma

With the aid of diagrams, describe the forces actingon an object:

a)at restb)moving at constant velocityc)acceleratingConduct experiments to find the relationship between:

a)acceleration and mass of an object under constantforce

b) acceleration and force for a constant mass.Solve problems using F = ma

When the forces acting on anobjects are balanced they

cancel each other out (nett

force = 0). The object then

behaves as if there is no forceacting on it.

Newtons Second Law of Motion

may be introduced here

15

9 14

April 2012

2.6 Analysing impulse

and impulsive force

A student is able to: Explain what an impulsive force is . give examples of situations involving

impulsive forces

Define impulse as a change ofmomentum, i.e.

mu-mvFt

Define impulsive forces as the rateof change of momentum in a collision

or explosion, i.e.

t

mu-mvF

Explain the effect of increasing ordecreasing time of impact on the

magnitude of the impulsive force.

Describe situation where an impulsiveforce needs to be reduced and

suggest ways to reduce it. describe situation where an impulsive

force is beneficial

solve problems involving impulsiveforces

View computer simulations of collision and explosionsto gain an idea on impulsive forces.

Discuss

a) impulse as a change of momentumb) an impulsive force as the rate of change of

momentum in a collision or explosion

c) how increasing or decreasing time of impactaffects the magnitude of the impulsive force.

Research and report situations where:a) an impulsive force needs to be reduced and how it

can be done

b) an impulsive force is beneficial

Solve problems involving impulsive forces

7/28/2019 RPT PHY F4 2012

7/20

7/20

WeekLearning


2.7 Being aware of

the need for safety

features in vehicles


describe the importance ofsafety features in vehicles

Research and report on the physics of vehicle

collision and safety features in vehicles in terms

of physics concepts.

Discuss the importance of safety features invehicles.

16

16 20

Apr 2012

2.8 Understanding

gravity


explain acceleration due togravity

state what a gravitational field is define gravitational field

strength

determine the value ofacceleration due to gravity

define weight (W) as the productof mass (m) and acceleration due

to gravity (g) i.e. W =mg.

solve problems involvingacceleration due to gravity.

Carry out activity or view computer simulations

to gain an idea of acceleration due to gravity.

Discuss

a) acceleration due to gravityb) a gravitational field as a region in which an

object experiences a force due to

gravitational attraction and

c) gravitational field strength (g) asgravitational force per unit mass

Carry out an activity to determine the value ofacceleration due to gravity.

Discuss weight as the Earths gravitational force

on an object

Solve problems involving acceleration due to

gravity.

When considering a body

falling freely, g (= 9.8 m/s2)

is its acceleration but when

it is at rest, g (=9.8 N/kg) is

the Earths gravitational

field strength acting on it.

The weight of an object of

fixed mass is dependent on

the g exerted on it.

17

23 27

Apr 2012

2.9 Analysing forces

in equilibrium


describe situations where forcesare in equilibrium

state what a resultant force is Add two forces to determine the

resultant force.

Resolve a force into theeffective component forces.

Solve problems involving forces inequilibrium

With the aid of diagrams, describe situations

where forces are in equilibrium, e.g. a book at

rest on a table, an object at rest on an inclined

plane.

With the aid of diagrams, discuss the resolution

and addition of forces to determine theresultant force.

Solve problems involving forces in equilibrium

(limited to 3 forces).

7/28/2019 RPT PHY F4 2012

8/20

8/20

WeekLearning


18

30 Apr

4 May 2012

2.10 Understanding

work, energy, power

and efficiency.


Define work (W) as the productof an applied force (F) and

displacement (s) of an object inthe direction of the applied

force i.e. W = Fs.

State that when work is doneenergy is transferred from one

object to another.

Define kinetic energy and statethat 2k mv2

1E

Define gravitational potentialenergy and state that Ep = mgh

State the principle ofconservation of energy.

Define power and state thatP = W/t

Explain what efficiency of adevice is.

Solve problems involving work,energy, power and efficiency

Observe and discus situations where work is

done.

Discuss that no work is done when:

a)a force is applied but no displacement occursb) an object undergoes a displacement with noapplied force acting on it.

Give examples to illustrate how energy is

transferred from one object to another when

work is done

Discuss the relationship between work done toaccelerate a body and the change in kinetic

energy.

Discuss the relationship between work done

against gravity and gravitational potentialenergy.

Carry out an activity to show the principle of

conservation of energy

State that power is the rate at which work isdone, P = W/t.

Carry out activities to measure power.

Discuss efficiency as:

Useful energy output x 100 %

Energy input

Evaluate and report the efficiencies of variousdevices such as a diesel engine, a petrol engine

and an electric engine.

Solve problems involving work, energy, power and

efficiency.

Have students recall the

different forms of energy.

7/28/2019 RPT PHY F4 2012

9/20

9/20

WeekLearning


2.11 Appreciating the

importance of

maximising the

efficiency ofdevices.


Recognize the importance ofmaximising efficiency of devices

in conserving resources.

Discuss that when an energy transformation

takes place, not all the energy is used to do

useful work. Some is converted into heat or

other types of energy. Maximising efficiencyduring energy transformations makes the best

use of the available energy. This helps to

conserve resources

19

7 11

May 2012

2.12 Understanding

elasticity.


define elasticity define Hookes Law define elastic potential energy

and state that 2p kx2

1E

Determine the factors thataffect elasticity.

Carry out activities to gain an idea on elasticity.

Plan and conduct an experiment to find the

relationship between force and extension of a

spring.

Relate work done to elastic potential energy to

obtain 2p kx2

1E .

Describe and interpret force- extension graphs.

Investigate the factors that affect elasticity.

PEKA 2:


relationship between weight

of load and the extension of

spring.20

14 - 18

May 2012

PEPERIKSAAN PERTENGAHAN TAHUN 2012

21

21 - 25

May 2012

PEPERIKSAAN PERTENGAHAN TAHUN 2012

22

28 May -

1 June 2012

CUTI PERTENGAHAN TAHUN

23

4 - 8

June 2012

CUTI PERTENGAHAN TAHUN

24

11 15

Jun 2012


Describe applications ofelasticity

Solve problems involvingelasticity

Research and report on applications of

elasticity.

Solve problems involving elasticity.

7/28/2019 RPT PHY F4 2012

10/20

10/20

LEARNING AREA: 3. FORCES AND PRESSURE

WeekLearning


2518 - 22

June 2012

3.1 Understandingpressure


Define pressure and state thatA

FP

Describe applications ofpressure

solve problems involving pressure

Observe and describe the effect of a force

acting over a large area compared to a smallarea, e.g. school shoes versus high heeled shoes.

Discuss pressure as force per unit area

Research and report on applications of pressure.

Solve problems involving pressure

Introduce the unit of

pressure Pascal (Pa)(Pa = N/m2)

3.2 Understanding

pressure in liquids


Relate depth to pressure in aliquid

Relate density to pressure in aliquid

Explain pressure in a liquid andstate that P = hg

Describe applications of pressurein liquids.

Solve problems involving pressurein liquids.

Observe situations to form ideas that pressure

in liquids:

a) acts in all directionsb) increases with depthObserve situations to form the idea that

pressure in liquids increases with densityRelate depth (h) , density ( and gravitationalfield strength (g) to pressure in liquids to obtain

P = hg


a) the applications of pressure inliquids

b) ways to reduce the negative effect of

pressure in liquid

Solve problems involving pressure in liquids.

7/28/2019 RPT PHY F4 2012

11/20

11/20

WeekLearning


26

25 29

June 2012

3.3 Understanding

gas pressure and

atmospheric

pressure


explain gas pressure

explain atmospheric pressure describe applications of

atmospheric pressure

solve problems involvingatmospheric pressure and gas

pressure

Carry out activities to gain an idea of gas

pressure and atmospheric

Discuss gas pressure in terms of the behaviour

of gas molecules based on the kinetic theory

Discuss atmospheric pressure in terms of the

weight of the atmosphere acting on the Earths

surface

Discuss the effect of altitude on the magnitudeof atmospheric pressure

Research and report on the application of

atmospheric pressure

Solve problems involving atmospheric and gas

pressure including barometer and manometer

readings.

Student need to be

introduced to instruments

used to measure gas

pressure (Bourdon Gauge)

and atmospheric pressure

(Fortin barometer, aneroid

barometer). Working

principle of the instrument

is not required.

Introduce other units of

atmospheric pressure.1 atmosphere = 760 mmHg =

10.3 m water= 101300 Pa

1 milibar = 100 Pa

27

2 6

July 2012

3.4 Applying Pascals

principle


State Pascals principle.

Explain hydraulic system

Describe applications of Pascalsprinciple.

Solve problems involving Pascalsprinciple.

Observe situations to form the idea that

pressure exerted on an enclosed liquid is

transmitted equally to every part of the liquid

Discuss hydraulic systems as a force multiplier

to obtain:

Output force = output piston areaInput force input piston area

Research and report on the application ofPascals principle (hydraulic systems)

Solve problems involving Pascals principle

7/28/2019 RPT PHY F4 2012

12/20

12/20

WeekLearning


3.5 Applying

Archimedes

principle.


Explain buoyant force

Relate buoyant force to theweight of the liquid displaced

State Archimedes principle.

Describe applications ofArchimedes principle

Solve problems involvingArchimedes principle

Carry out an activity to measure the weight of

an object in air and the weight of the same

object in water to gain an idea on buoyant force.

Conduct an experiment to investigate the

relationship between the weight of water

displaced and the buoyant force.

Discuss buoyancy in terms of:

a) An object that is totally or partiallysubmerged in a fluid experiences a buoyant

force equal to the weight of fluid displaced

b) The weight of a freely floatingobject being equal to the weight

of fluid displaced

c) A floating object has a density

less than or equal to the density of the fluid

in which it is floating.


Archimedes principle, e.g. submarines,

hydrometers, hot air balloons

Solve problems involving Archimedes principle.Build a Cartesian diver. Discuss way the diver

can be made to move up and down.

Have students recall the

different forms of energy.

289 13

July 2012

3.6 UnderstandingBernoullis principle.


State Bernoullis principle Explain that resultant force

exists due to a difference influid pressure

Carry out activities to gain the idea that when

the speed of a flowing fluid increases itspressure decreases, e.g. blowing above a strip of

paper, blowing through straw, between two pingpong balls suspended on strings.

Discuss Bernoullis principle

Carry out activities to show that a resultant

force exists due to a difference in fluid

7/28/2019 RPT PHY F4 2012

13/20

13/20

WeekLearning


Describe applications ofBernoullis principle

Solve problems involvingBernoullis principle

pressure.

View a computer simulation to observe air flow

over an aerofoil to gain an idea on lifting force.


Bernoullis principle.

Solve problems involving Bernoullis principle.

LEARNING AREA:4. HEAT

WeekLearning


29

16 20

July 2012

4.1 Understanding

thermal equilibrium.


Explain thermal equilibrium

Explain how a liquid in glassthermometer works

Carry out activities to show that thermal

equilibrium is a condition in which there is no

nett heat flow between two objects in thermal

contact

Use the liquid-in-glass thermometer to explain

how the volume of a fixed mass of liquid may be

used to define a temperature scale.

30

23 27

July 2012

4.2 Understanding

specific heat

capacity


Define specific heat capacity ( c) State that

mc

Qc

Determine the specific heatcapacity of a liquid.

Determine the specific heat

Observe the change in temperature when:

a) the same amount of heat is used to heat

different masses of water.

b) the same amount of heat is used to heat thesame mass of different liquids.

Discuss specific heat capacity

Plan and carry out an activity to determine the

specific heat capacity of

Heat capacity only relates

to a particular object

whereas specific heat

capacity relates to amaterial

Guide students to analyse

the unit of c as 11KJkg

7/28/2019 RPT PHY F4 2012

14/20

14/20

WeekLearning


capacity of a solid

Describe applications of aspecific heat capacity

Solve problems involving specificheat capacity.

a) a liquid b) a solid

Research and report on applications of specific

heat capacity.

Solve problems involving specific heat capacity.

or 1o1 CJkg

31

30 July

3 Aug 2012

4.3 Understanding

specific latent heat


State that transfer of heatduring a change of phase does

not cause a change in

temperature

Define specific latent heat l State that

m

Ql

Determine the specific latentheat of a fusion.

Determine the specific latentheat of vaporization

Solve problems involving specificlatent heat

Carry out an activity to show that there is no

change in temperature when heat is supplied to:

a) A liquid at its boiling point.b) A solid at its melting point.With the aid of a cooling and heating curve,

discuss melting, solidification, boiling and

condensation as processes involving energy

transfer without a change in temperature.

Discuss

a)

latent heat in terms of molecular behaviourb) specific latent heatPlan and carry out an activity to determine the

specific latent heat of

a) fusion b) vaporisation

Solve problems involving specific latent heat.

Guide students to analyse

the unit of l

as 1Jkg

32

6 10

Aug 2012

UJIAN BULANAN 2 & PEMBETULAN UJIAN

7/28/2019 RPT PHY F4 2012

15/20

15/20

WeekLearning


33

13 17

Aug 2012

4.4 Understanding

the gas laws


Explain gas pressure,temperature and volume in terms

of gas molecules.

Determine the relationshipbetween pressure and volume at

constant temperature for a fixed

mass of gas, i.e pV = constant

Determine the relationshipbetween volume and temperature

at constant pressure for a fixed

mass of gas, i.e V/T = constant

Determine the relationshipbetween pressure and

temperature at constant volume

for a fixed mass of gas, i.e p/T =

constant

Explain absolute zero Explain the absolute/Kelvin scale

of temperature

Solve problems involvingpressure, temperature andvolume of a fixed mass of gas

Use a model or view computer simulations on the

bahaviour of molecules of a fixed mass of gas to

gain an idea about gas pressure, temperature

and volume.

Discuss gas pressure, volume and temperature in

terms of the behaviour of molecules based on

the kinetic theory.

Plan and carry out an experiment on a fixed

mass of gas to determine the relationship

between:a) pressure and volume at constant temperatureb) volume and temperature at constant pressurec) pressure and temperature at constant volume

Extrapolate P-T and V-T graphs or viewcomputer simulations to show that when

pressure and volume are zero the temperature

on a P-T and V-T graph is 2730C.

Discuss absolute zero and the Kelvin scale of

temperature

Solve problems involving the pressure,

temperature and volume of a fixed mass of gas.

7/28/2019 RPT PHY F4 2012

16/20

16/20

LEARNING AREA:5. LIGHT

WeekLearning


34

20 - 24Aug 2012 CUTI PERTENGAHAN PENGGAL

35

27 30

Aug 2012

5.1 Understanding

reflection of light.


Describe the characteristic ofthe image formed by reflection

of light

Observe the image formed in a plane mirror.

Discuss that the image is:

a) as far behind the mirror as the

object is in front and the line

joining the object and image isperpendicular to the mirror.

b) the same size as the object

c) virtual

d) laterally inverted

7/28/2019 RPT PHY F4 2012

17/20

17/20

WeekLearning


36

3 - 7

Sep 2012

5.2 Understanding

refraction of light.


Explain refraction of light Define refractive index as

sinr

sini

Determine the refractive indexof a glass or Perspex block

State the refractive index, , asSpeed of light in a vacuum

Speed of light in a medium

Describe phenomena due torefraction

Solve problems involvingrefraction of light

Observe situations to gain an idea of refraction

Conduct an experiment to find the relationship

between the angle of incidence and angle ofrefraction to obtain Snells law.

Carry out an activity to determine the

refractive index of a glass or perspex block

Discuss the refractive index, , as

Speed of light in a vacuum

Speed of light in a medium

Research and report on phenomena due to

refraction, e.g. apparent depth, the twinkling ofstars.

Carry out activities to gain an idea of apparentdepth. With the aid of diagrams, discuss real

depth and apparent depth.

Solve problems involving refraction of light

PEKA 3:


relationship between the

angle of incidence and angle

of refraction.

7/28/2019 RPT PHY F4 2012

18/20

18/20

WeekLearning


37

10 - 14

Sep 2012

5.3 Understanding

total internal

reflection of light.


Explain total internal reflectionof light

Define critical angle (c)

Relate the critical angle to therefractive index i.e

csin

1

Describe natural phenomenoninvolving total internal reflection

Describe applications of totalinternal reflection

Solve problems involving totalinternal reflection

Carry out activities to show the effect of

increasing the angle of incidence on the angle of

refraction when light travels from a denser

medium to a less dense medium to gain an idea

about total internal reflection and to obtain thecritical angle.

Discuss with the aid of diagrams:

a) total internal reflection and

critical angle

b) the relationship between criticalangle and refractive angle


a) natural phenomena involving total

internal reflection

b) the applications of total

reflection e.g. in

telecommunication using fibre

optics.

Solve problems involving total internal reflection

38

17 21

Sep 2012

5.4 Understanding

lenses.


Explain focal point and focallength

determine the focal point andfocal length of a convex lens

determine the focal point andfocal length of a concave lens

Use an optical kit to observe and measure light

rays traveling through convex and concave

lenses to gain an idea of focal point and focal

length.

Determine the focal point and focal length ofconvex and concave lenses.

3924 - 28

5.4 Understandinglenses.

Draw ray diagrams to show thepositions and characteristics ofthe images formed by a convex

With the help of ray diagrams, discuss focal

point and focal length

7/28/2019 RPT PHY F4 2012

19/20

19/20

WeekLearning


Sep 2012 lens.

Draw ray diagrams to show thepositions and characteristics of

the images formed by a concavelens.

Define magnification asu

vm

Relate focal length (f) to theobject distance (u) and image

distance (v)

i.e.v

1

u

1

f

1

Describe, with the aid of raydiagrams, the use of lenses in

optical devices.

Construct an optical device thatuses lenses.

Solve problems involving tolenses.

Draw ray diagrams to show the positions and

characteristic of the images formed by a

a) convex lens b) concave lens

Carry out activities to gain an idea of

magnification.

With the help of ray diagrams, discuss

magnification.

Carry out activities to find the relationshipbetween u, v and f

Carry out activities to gain an idea on the use of

lenses in optical devices.

With the help of ray diagrams, discuss the use

of lenses in optical devices such as a telescope

and microscope

Construct an optical device that uses lenses.

Solve problems involving to lenses

PEKA 4:


relationship between the

object distance and image

distance of a lens.

40

1 - 5

Oct 2012

ULANGKAJI PERSEDIAAN PEPERIKSAAN AKHIR TAHUN

418 12

Oct 2012


42

15 19

Oct 2012


7/28/2019 RPT PHY F4 2012

20/20

20/20

WeekLearning


43

22 - 26

Oct 2012


44

29 Oct -2 Nov 2012

PEPERIKSAAN AKHIR TAHUN

45

5 - 9

Nov 2012

PEPERIKSAAN AKHIR TAHUN

10 Nov 2012

31 Dis 2012

CUTI AKHIR TAHUN

rpt phy f4 2012

Documents