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WK | LSN | TOPIC | SUB-TOPIC | OBJECTIVES | T/L ACTIVITIES | T/L AIDS | REFERENCE | REMARKS |
---|---|---|---|---|---|---|---|---|
2 | 1 |
Current Electricity Ii
|
Electric current
Scale reading
|
By the end of the
lesson, the learner
should be able to:
Define potential Differentiate and state its SI units Measure potential difference and current in a circuit |
Defining potential difference Measuring P.d Discussion on p.d and current Experiments to illustrate p.d and current |
Ammeter Voltmeter Battery Connecting wires |
Comprehensive secondary physics students book 3 pages 54-55
Comprehensive secondary physics teachers book 3 pages 24-28 Secondary physics KLB students book 3 page 161-164 |
|
2 | 2 |
Current Electricity Ii
|
Ohm?s Law
|
By the end of the
lesson, the learner
should be able to:
Derive and verify ohm?s law State ohm?s law |
Experiments verifying ohm?s law Stating ohm?s law |
Ammeter Voltmeter Rheostat Wires Dry cells |
Comprehensive secondary physics students book 3 pages 55-57
Comprehensive secondary physics teachers book 3 pages 24-28 Secondary physics KLB students book 3 page 168-171 |
|
2 | 3-4 |
Current Electricity Ii
|
Measurement of resistance
Ammeters and voltmeters |
By the end of the
lesson, the learner
should be able to:
Describe experiment to measure resistance using ? voltmeter method The Wheatstone bridge method The meter bridge Measure potential difference and current in a circuit using the ammeters |
Experiments to measure resistance of materials Scale reading Converting units of measurements Discussing simple electric circuits |
Ammeters Voltmeters Rheostats Connecting wires Resistance wire Dry cells Switches Meter bridge Wheatstone bridge Resisters with known resistance Ammeters Voltmeters Battery Wires Rheostat |
Comprehensive secondary physics students book 3 pages 57-59
Comprehensive secondary physics teachers book 3 pages 26-28 Secondary physics KLB students book 3 page 177-180 Comprehensive secondary physics students book 3 pages 54-55 Comprehensive secondary physics teachers book 3 pages 24-28 Secondary physics KLB students book 3 page 164-168 |
|
2 | 5 |
Current Electricity
|
Ammeters and voltmeters
|
By the end of the
lesson, the learner
should be able to:
Measure potential difference and current in a circuit using the ammeters |
Scale reading Converting units of measurements Discussing simple electric circuits |
Ammeters Voltmeters Battery Wires Rheostat |
Comprehensive secondary physics students book 3 pages 54-55
Comprehensive secondary physics teachers book 3 pages 24-28 Secondary physics KLB students book 3 page 164-168 |
|
3 | 1 |
Current Electricity
|
Voltage-current relationships
|
By the end of the
lesson, the learner
should be able to:
Define resistance and state its SI unit Determine experientially the voltage current Relationship for resistance in series and parallel |
Defining resistance Experiments to determine the relationship between voltage-current |
Resistance wire Rheostat Battery Voltmeter Ammeter Connecting wires |
Comprehensive secondary physics students book 3 pages 57-59
Comprehensive secondary physics teachers book 3 pages 26-28 Secondary physics KLB students book 3 page 171-177 |
|
3 | 2 |
Current Electricity
|
Effective resistance for registers in series and parallel
|
By the end of the
lesson, the learner
should be able to:
Derive effective resistance |
Discussions on deriving the effective resistance Deriving effective resistance of registers in parallel and series |
Cells Resistors Ammeters Voltmeters wires |
Comprehensive secondary physics students book 3 pages 60-66
Comprehensive secondary physics teachers book 3 pages 24-28 Secondary physics KLB students book 3 page 180-189 |
|
3 | 3-4 |
Current Electricity
|
Effective resistance for registers in series and parallel
E.m.f and internal resistance (E=V+1r) |
By the end of the
lesson, the learner
should be able to:
Derive effective resistance Determine e.m.f Explain the internal resistance of a cell |
Discussions on deriving the effective resistance Deriving effective resistance of registers in parallel and series Explanation on internal resistance Demonstration on e.m.f and internal resistance Discussion on e.m.f |
Cells Resistors Ammeters Voltmeters wires Voltmeters Ammeter Cells Connecting wires |
Comprehensive secondary physics students book 3 pages 60-66
Comprehensive secondary physics teachers book 3 pages 24-28 Secondary physics KLB students book 3 page 180-189 Comprehensive secondary physics students book 3 pages 62-63 Comprehensive secondary physics teachers book 3 pages 24-28 Secondary physics KLB students book 3 page 190-195 |
|
3 | 5 |
Current Electricity
|
E.m.f and internal resistance (E=V+1r)
|
By the end of the
lesson, the learner
should be able to:
Determine e.m.f Explain the internal resistance of a cell |
Explanation on internal resistance Demonstration on e.m.f and internal resistance Discussion on e.m.f |
Voltmeters Ammeter Cells Connecting wires |
Comprehensive secondary physics students book 3 pages 62-63
Comprehensive secondary physics teachers book 3 pages 24-28 Secondary physics KLB students book 3 page 190-195 |
|
4 | 1 |
Waves II
|
Properties of waves
|
By the end of the
lesson, the learner
should be able to:
State and explain the properties of waves experimentally Sketch wave fronts to illustrate the reflections |
Stating and explaining the properties of waves Sketching wave fronts illustrate reflection |
Rope/wire Various reflections |
Comprehensive secondary physics students book 3 pages 67-69
Comprehensive secondary physics teachers book 3 pages 29-32 Secondary physics KLB students book 3 page 198-203 |
|
4 | 2 |
Waves II
|
Diffraction, refraction and interference of waves
|
By the end of the
lesson, the learner
should be able to:
Sketch various wave fonts to illustrate their diffraction, refraction and interference |
Sketching various wave fonts Experiments to illustrate refraction, diffraction and interference |
Water Basin Ripple Tank |
Comprehensive secondary physics students book 3 pages 70-73
Comprehensive secondary physics teachers book 3 pages 29-32 Secondary physics KLB students book 3 page 203-212 |
|
4 | 3-4 |
Waves II
|
Diffraction, refraction and interference of waves
Constructive and distractive waves |
By the end of the
lesson, the learner
should be able to:
Sketch various wave fonts to illustrate their diffraction, refraction and interference Explain constructive and destructive interference |
Sketching various wave fonts Experiments to illustrate refraction, diffraction and interference Discussion on constructive and destructive interference Experiments constructive and destructive interference |
Water Basin Ripple Tank Ripple tank Rope/wire |
Comprehensive secondary physics students book 3 pages 70-73
Comprehensive secondary physics teachers book 3 pages 29-32 Secondary physics KLB students book 3 page 203-212 Comprehensive secondary physics students book 3 pages 73-74 Comprehensive secondary physics teachers book 3 pages 29-32 Secondary physics KLB students book 3 page 203-212 |
|
4 | 5 |
Waves II
|
Stationary waves
|
By the end of the
lesson, the learner
should be able to:
Describe experiments to illustrate stationary waves |
Demonstration and explaining of stationery waves |
Wires under tension |
Comprehensive secondary physics students book 3 pages 74
Comprehensive secondary physics teachers book 3 pages 29-32 Secondary physics KLB students book 3 page 212-215 |
|
5 | 1 |
Waves II
|
Vibrating air columns
|
By the end of the
lesson, the learner
should be able to:
Describe and explain closed pipe and open pipe |
Describing vibrations in close and open pipes |
Open and closed pipes |
Comprehensive secondary physics students book 3 pages 74
Comprehensive secondary physics teachers book 3 pages 29-32 Secondary physics KLB students book 3 page 218-220 |
|
5 | 2 |
Waves II
|
Vibrating air columns
|
By the end of the
lesson, the learner
should be able to:
Describe and explain closed pipe and open pipe |
Describing vibrations in close and open pipes |
Open and closed pipes |
Comprehensive secondary physics students book 3 pages 74
Comprehensive secondary physics teachers book 3 pages 29-32 Secondary physics KLB students book 3 page 218-220 |
|
5 | 3-4 |
Waves II
Electrostatics Ii |
Vibrating air columns
Electric field patterns |
By the end of the
lesson, the learner
should be able to:
Describe and explain closed pipe and open pipe Sketch electric field patterns around charged bodies |
Describing vibrations in close and open pipes Discussion on electric field patterns Observing and plotting field patterns |
Open and closed pipes Charts on magnetic fields |
Comprehensive secondary physics students book 3 pages 74
Comprehensive secondary physics teachers book 3 pages 29-32 Secondary physics KLB students book 3 page 218-220 Comprehensive secondary physics students book 3 pages 76-77 Comprehensive secondary physics teachers book 3 pages 34-39 Secondary physics KLB students book 3 page 222-225 P |
|
5 | 5 |
Electrostatics Ii
|
Electric field patterns
|
By the end of the
lesson, the learner
should be able to:
Sketch electric field patterns around charged bodies |
Discussion on electric field patterns Observing and plotting field patterns |
Charts on magnetic fields |
Comprehensive secondary physics students book 3 pages 76-77
Comprehensive secondary physics teachers book 3 pages 34-39 Secondary physics KLB students book 3 page 222-225 P |
|
6 | 1 |
Electrostatics Ii
|
Charge distribution on conductors
|
By the end of the
lesson, the learner
should be able to:
Describe charge distribution on conductors: Spherical and pear shaped conductors |
Discussions on charge distribution on conductors Experiment is demonstrated/illustrate charge distribution on conductors |
Vande Graaf generator Chart showing charge distribution on different conductors Gold leaf electroscope |
Comprehensive secondary physics students book 3 pages 77-78
Comprehensive secondary physics teachers book 3 pages 34-39 Secondary physics KLB students book 3 page 225-228 |
|
6 | 2 |
Electrostatics Ii
|
Charge distribution on conductors
|
By the end of the
lesson, the learner
should be able to:
Describe charge distribution on conductors: Spherical and pear shaped conductors |
Discussions on charge distribution on conductors Experiment is demonstrated/illustrate charge distribution on conductors |
Vande Graaf generator Chart showing charge distribution on different conductors Gold leaf electroscope |
Comprehensive secondary physics students book 3 pages 77-78
Comprehensive secondary physics teachers book 3 pages 34-39 Secondary physics KLB students book 3 page 225-228 |
|
6 | 3-4 |
Electrostatics Ii
|
Lighting arrestor
Capacitance |
By the end of the
lesson, the learner
should be able to:
Explain how lightning arrestor works Define capacitance and state its SI units Describe the charging and discharging of a capacitor State and explain the factors that affect the capacitance of a parallel plate capacitor |
Discussions on the lighting arrestor Explanations on the lighting arrestor Experiments on charging and discharging capacitor Discussion on factors affecting capacitance Defining capacitance |
Improvised lighting arrestor Photographs of lightning arrestor Complete circuits capacitors |
Comprehensive secondary physics students book 3 pages 79-80
Comprehensive secondary physics teachers book 3 pages 34-39 Secondary physics KLB students book 3 page 229-230 Comprehensive secondary physics students book 3 pages 80-82 Comprehensive secondary physics teachers book 3 pages 34-39 Secondary physics KLB students book 3 page 230-237 |
|
6 | 5 |
Electrostatics Ii
|
Capacitance
|
By the end of the
lesson, the learner
should be able to:
Define capacitance and state its SI units Describe the charging and discharging of a capacitor State and explain the factors that affect the capacitance of a parallel plate capacitor |
Experiments on charging and discharging capacitor Discussion on factors affecting capacitance Defining capacitance |
Complete circuits capacitors |
Comprehensive secondary physics students book 3 pages 80-82
Comprehensive secondary physics teachers book 3 pages 34-39 Secondary physics KLB students book 3 page 230-237 |
|
7 | 1 |
Electrostatics Ii
|
Combinations of capacitors
|
By the end of the
lesson, the learner
should be able to:
Derive the effective capacitance of capacitors in series and parallel |
Deriving effective capacitance of capacitors in series and parallel Solving problems Discussion in the effective capacitance |
Capacitors in series and parallel connections Charts showing complete circuits |
Comprehensive secondary physics students book 3 pages 80-82
Comprehensive secondary physics teachers book 3 pages 34-39 Secondary physics KLB students book 3 page 237-241 |
|
7 | 2 |
Electrostatics Ii
|
Energy stored in a charged capacitor
|
By the end of the
lesson, the learner
should be able to:
Describe the energy stored in a charged capacitor |
Describing the energy stored in a charged capacitor |
Capacitors Dry cells Charts on capacitors used |
Comprehensive secondary physics students book 3 pages 82
Comprehensive secondary physics teachers book 3 pages 34-39 Secondary physics KLB students book 3 page 244 |
|
7 | 3-4 |
Electrostatics
The Heating Effect Of Electric Current |
Application of capacitors
Electric current heating effect |
By the end of the
lesson, the learner
should be able to:
State and explain the applications of capacitors Perform and describe experiments to illustrate the heating effect of electric current |
Discussions on applications of capacitors Stating and explaining applications of capacitors Experiments to illustrate heating effect of electric current Discussions on heating effect of electric current |
Charts on the use of capacitors capacitors Complete circuit Water in a beaker Metallic rod Thermometer |
Comprehensive secondary physics students book 3 pages 82-84
Comprehensive secondary physics teachers book 3 pages 34-39 Secondary physics KLB students book 3 page 244 Comprehensive secondary physics students book 3 pages 88 Comprehensive secondary physics teachers book 3 pages 39-41 Secondary physics KLB students book 3 page 246-247 |
|
8 |
Mid term |
|||||||
9 | 1 |
The Heating Effect Of Electric Current
|
Heating devices
fuses
|
By the end of the
lesson, the learner
should be able to:
describe the working of electric iron, bulb filament and an electric water |
discussion on electric devices observations and experiments on heating devices |
electric irons electric bulb electric kettle electric heater fuses |
Comprehensive secondary physics students book 3 pages 90-91
Comprehensive secondary physics teachers book 3 pages 39-41 Secondary physics KLB students book 3 page 255-258 |
|
9 | 2 |
The Heating Effect Of An Electric Current
|
Factors affecting electric current
|
By the end of the
lesson, the learner
should be able to:
State and explain the factors affecting electrical energy |
Discussions on the factors affecting electrical energy Experiments on electrical energy Stating and explaining factors affecting the electrical energy |
Complete circuit Wires Rheostat Ammeter battery |
Comprehensive secondary physics students book 3 pages 88-90
Comprehensive secondary physics teachers book 3 pages 39-41 Secondary physics KLB students book 3 page 247-255 |
|
9 | 3-4 |
The Heating Effect Of An Electric Current
Quantity Of Heat |
Factors affecting electric current
Heat capacity Specific heat capacity Units of heat capacity |
By the end of the
lesson, the learner
should be able to:
State and explain the factors affecting electrical energy By the end of the lesson the learner should be able to Define heat capacity and specific heat capacity and derive their SI units |
Discussions on the factors affecting electrical energy Experiments on electrical energy Stating and explaining factors affecting the electrical energy Experiments on heat capacity and specific heat capacity Discussion on heat capacity and specific h eat capacity Defining heat capacity and heat specific heat capacity |
Complete circuit Wires Rheostat Ammeter battery Source of heat Water Lagged can Thermometer |
Comprehensive secondary physics students book 3 pages 88-90
Comprehensive secondary physics teachers book 3 pages 39-41 Secondary physics KLB students book 3 page 247-255 Comprehensive secondary physics students book 3 pages 93-96 Comprehensive secondary physics teachers book 3 pages 42-46 Secondary physics KLB students book 3 page 246-260-271 |
|
9 | 5 |
Quantity Of Heat
|
Change of state
|
By the end of the
lesson, the learner
should be able to:
By the end of the lesson the learner should be able to define and explain latent heat of fusion, specific latent heat of fusion Define and explain latent heat of vaporization, specific latent heat of vaporization State the SI units of latent heat of fusion and latent heat of vaporization |
Experiments on latent heat of fusion and latent heat of vaporization Discussion on latent heat of fusion and latent heat of vaporization |
File Water Thermometer Weighing balance Source of heat |
Comprehensive secondary physics students book 3 pages 96-97
Comprehensive secondary physics teachers book 3 pages 42-46 Secondary physics KLB students book 3 page 246-271-281 |
|
10 | 1 |
Quantity Of Heat
|
Boiling and melting
|
By the end of the
lesson, the learner
should be able to:
Distinguish between boiling and melting State the factors affecting melting points and boiling points of a substance Describe the working of a pressure cooker and a refrigerator |
Distinguishing between boiling and melting points Stating factors affecting boiling and melting points Experiments to illustrate boiling and melting point |
Pressure cooker Refrigerator Charts on melting and boiling points Ice Heat Sufuria water |
Comprehensive secondary physics students book 3 pages 97-101
Comprehensive secondary physics teachers book 3 pages 42-46 Secondary physics KLB students book 3 page 246-282-288 |
|
10 | 2 |
The Gas Laws
|
Pressure law
|
By the end of the
lesson, the learner
should be able to:
State and verify the gas laws for an ideal gas experimentally |
Experiments to verify pressure law Demonstrations on pressure law Discussion on pressure law |
Water Thermometer Measuring cylinder Syringe Narrow glass tube |
Comprehensive secondary physics students book 3 pages 103-104
Comprehensive secondary physics teachers book 3 pages 47-50 Secondary physics KLB students book 3 page 299-302 |
|
10 | 3 |
The Gas Laws
|
Charles?s law
|
By the end of the
lesson, the learner
should be able to:
State and verify Charles?s law experimentally |
Experiments to verify Charles?s law Discussion on Charles?s law |
Water Thermometer Measuring cylinder Syringe Narrow glass tube |
Comprehensive secondary physics students book 3 pages 105-106
Comprehensive secondary physics teachers book 3 pages 47-50 Secondary physics KLB students book 3 page 295-298 |
|
10 | 3-4 |
The Gas Laws
|
Charles?s law
Boyle?s law |
By the end of the
lesson, the learner
should be able to:
State and verify Charles?s law experimentally State and verify Boyle?s law experimentally |
Experiments to verify Charles?s law Discussion on Charles?s law Experiments verifying and explain Boyle?s law Discussion on Boyle?s law |
Water Thermometer Measuring cylinder Syringe Narrow glass tube Water Thermometer Syringe Measuring cylinder Narrow glass tube |
Comprehensive secondary physics students book 3 pages 105-106
Comprehensive secondary physics teachers book 3 pages 47-50 Secondary physics KLB students book 3 page 295-298 Comprehensive secondary physics students book 3 pages 106-107 Comprehensive secondary physics teachers book 3 pages 47-50 Secondary physics KLB students book 3 page 290-294 |
|
10 | 5 |
The Gas Laws
|
The kinetic theory of gases
|
By the end of the
lesson, the learner
should be able to:
Convert Celsius scales to Kelvin scale of temperature and state basic assumptions of kinetic theory of gases |
Discussion on basic assumptions of kinetic theory of gases Conversion of Celsius to Kelvin scales |
Graph paper Clinical thermometer |
Comprehensive secondary physics students book 3 pages 110-111
Comprehensive secondary physics teachers book 3 pages 50-51 Secondary physics KLB students book 3 page 107 |
|
11 | 1 |
The Gas Law?s
|
The kinetic theory of gases
|
By the end of the
lesson, the learner
should be able to:
Explain law absolute zero temperature may be obtained from pressure and temp. graphs |
Discussions on the absolute zero temperature from pressure using kinetic theory of gases |
Graph paper Clinical thermometer Working out sums |
Comprehensive secondary physics students book 3 pages 108-110
Comprehensive secondary physics teachers book 3 pages 47-50 Secondary physics KLB students book 3 page 303 |
|
11 | 2 |
Lenses
|
Conveying and diverging lenses
|
By the end of the
lesson, the learner
should be able to:
By the end of the lesson the learner should be able to Describe converging lenses Describe diverging lenses |
Using light beams to distinguish between diverging and converging lenses |
Diverging lenses Converging lenses Source of light beam screen |
Comprehensive secondary physics students book 4 pages 1-2
teachers book 3 pages 1-5 Secondary physics KLB students book 4 page 1 |
|
11 | 3-4 |
Lenses
|
Parts of fair lenses
Focal length |
By the end of the
lesson, the learner
should be able to:
Describe the principal focus using ray diagram Describe the optical center using ray diagram Describe the focal length of thin lenses using ray diagram Determine experimentally the focal length of a converging lens Determine the focal length of a converging lens using estimation method |
Description of principal focus, optical centre and focal length of a thin lens Experiment to determine the focal length of a fair lens |
Chart showing the parts of thin lens Graph paper Diverging lens Converging lens Converging lenses Screen Pins candle |
Comprehensive secondary physics students book 4 pages 1-3
teachers book 3 pages 1-5 Secondary physics KLB students book 4 page 6-7 Comprehensive secondary physics students book 4 pages 2-3 teachers book 3 pages 1-5 Secondary physics KLB students book 4 page 17-20 |
|
11 | 5 |
Lenses
|
Images in fair lenses
|
By the end of the
lesson, the learner
should be able to:
Construct the principal rays for converging lens Construct the principal rays for diverging lenses |
Constructing the principal rays for diverging lenses Constructing the principal rays for converging lenses |
Converging lenses Diverging lenses Graph papers Ruler |
Comprehensive secondary physics students book 4 pages 3-6
teachers book 3 pages 1-5 Secondary physics KLB students book 4 page 7-12 |
|
12 | 1 |
Lenses
|
Images in converging lenses
|
By the end of the
lesson, the learner
should be able to:
Locate imaged formed by converging lenses using ray construction method Describe the images formed in converging lenses |
Describing the characteristics of images formed in converging lenses |
Graph paper Geometrical set Converging lenses screen |
Comprehensive secondary physics students book 4 pages 5-6
teachers book 3 pages 1-5 Secondary physics KLB students book 4 page 7-10 |
|
12 | 2 |
Lenses
|
Images in converging lenses
|
By the end of the
lesson, the learner
should be able to:
Locate imaged formed by converging lenses using ray construction method Describe the images formed in converging lenses |
Describing the characteristics of images formed in converging lenses |
Graph paper Geometrical set Converging lenses screen |
Comprehensive secondary physics students book 4 pages 5-6
teachers book 3 pages 1-5 Secondary physics KLB students book 4 page 7-10 |
|
12 | 3-4 |
Lenses
|
Images in diverging lenses
The microscope |
By the end of the
lesson, the learner
should be able to:
Locate imaged formed by diverging lenses using ray construction method Describe the images formed in diverging lenses Explain the working of a simple microscope Explain the working of a compound microscope |
Describe the characteristics of the formed in diverging lenses Drawing and labeling the parts of a microscope Describing the work of a microscope |
Graph paper
Geometrical set Diverging lenses Screen Simple microscope Compound microscope Magnifying lens |
Comprehensive secondary physics students book 4 pages 5
teachers book 3 pages 1-5 Secondary physics KLB students book 4 page 11 Comprehensive secondary physics students book 4 pages 10-11 teachers book 4 pages 1-5 |
|
12 | 5 |
Lenses
|
The telescope
|
By the end of the
lesson, the learner
should be able to:
Describe the structure of a telescope Describe the working of a telescope |
Drawing and labeling the parts of a telescope Describing how a telescope works |
Telescope Lenses Manilla paper |
Comprehensive secondary physics students book 4 pages 11
teachers book 4 pages 1-5 |
|
13 | 1 |
Lenses
|
The camera
|
By the end of the
lesson, the learner
should be able to:
Describe the parts of a camera Explain the working of a camera Explain the use of lenses in a camera |
Describing the parts of a camera Explaining the use of lenses in a camera |
Camera Charts showing the parts of a camera |
Comprehensive secondary physics students book 4 pages 11-12
teachers book 4 pages 1-5 Secondary physics KLB students book 4 page 33 |
|
13 | 2 |
Lenses
|
Image formation in the human eye
|
By the end of the
lesson, the learner
should be able to:
Describe the parts of a human eye Explain the function of each part of the human eye |
Describing the parts of the human eye Explaining the function of each part of the human eye |
Chart showing the parts of human eye Model of the human eye |
Comprehensive secondary physics students book 4 pages 12-13
teachers book 34pages 1-5 Secondary physics KLB students book 4 page 29-31 |
|
13 | 3-4 |
Lenses
|
Working of the human eye
|
By the end of the
lesson, the learner
should be able to:
Explain the image formation in the human eye |
Explaining the image formation in the eye |
Chart showing the image formation in the human eye |
Comprehensive secondary physics students book 4 pages 13-14
teachers book 34pages 1-5 Secondary physics KLB students book 4 page 29-31 |
|
13 | 5 |
Lenses
|
Defects of vision
|
By the end of the
lesson, the learner
should be able to:
Describe the defects of the human eye Explain the corrections of human eye defects |
Describing the defects of the human eye Explaining the eye defects are corrected |
Charts showing eye defects and how they are corrected |
Comprehensive secondary physics students book 4 pages 13-14
teachers book 34pages 1-5 Secondary physics KLB students book 4 page 31-32 |
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