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SCHEME OF WORK
Biology
Form 3 2025
TERM III
School


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WK LSN TOPIC SUB-TOPIC OBJECTIVES T/L ACTIVITIES T/L AIDS REFERENCE REMARKS
2 1
ECOLOGY
Mesophytes.
By the end of the lesson, the learner should be able to:
To state characteristics of habitats of mesophytes.

To explain adaptations of mesophytes to their habitats.
Q/A: Characteristics of habitats where mesophytes thrive.

Discussion: Adaptations of mesophytes to their habitats.
Specimens of mesophytes.
KLB BK III. P 51. CERTIFICATE PG 69
2 2
ECOLOGY
Halophytes.
By the end of the lesson, the learner should be able to:
To state characteristics of habitats of halophytes.
To explain adaptations of halophytes to their habitats.
Q/A: Characteristics of dry habitats.
Discussion: Adaptations of dry habitats.
Specimens of halophytes.
KLB BK III. P 52. CERTIFICATE PG 68
2 3-4
ECOLOGY
Halophytes.
By the end of the lesson, the learner should be able to:
To state characteristics of habitats of halophytes.
To explain adaptations of halophytes to their habitats.
Q/A: Characteristics of dry habitats.
Discussion: Adaptations of dry habitats.
Specimens of halophytes.
KLB BK III. P 52. CERTIFICATE PG 68
2 5
ECOLOGY
Adaptive features of plants.
By the end of the lesson, the learner should be able to:
Group experiments- Students examine given specimens and suggest their habitats.
Identify adaptive features.
Xerophytes Mesophytes
Hydrophytes
Hand lenses.
KLB BK III. P 50. CERTIFICATE PG 69
3 1
ECOLOGY
Pollution and its effects.
By the end of the lesson, the learner should be able to:
To define pollution, pollutants.
To explain effects of pollution on human beings and other organisms.
Discussion punctuated with Q/A.
text book
KLB BK III. P 55. CERTIFICATE PG 70
3 2
ECOLOGY
Pollution and its effects.
By the end of the lesson, the learner should be able to:
To define pollution, pollutants.
To explain effects of pollution on human beings and other organisms.
Discussion punctuated with Q/A.
text book
KLB BK III. P 55. CERTIFICATE PG 70
3 3-4
ECOLOGY
Pollution and its effects.
Air pollution.
By the end of the lesson, the learner should be able to:
To define pollution, pollutants.
To explain effects of pollution on human beings and other organisms.

To identify causes and effects of air pollution.
To suggest control measures of air pollution.
Discussion punctuated with Q/A.
Detailed discussion & probing questions.
text book
topic related video
KLB BK III. P 55. CERTIFICATE PG 70
KLB BK III. PP 56-59. CERTIFICATE PG 70
3 5
ECOLOGY
Air pollution.
By the end of the lesson, the learner should be able to:
To identify causes and effects of air pollution.
To suggest control measures of air pollution.
Detailed discussion & probing questions.
topic related video
KLB BK III. PP 56-59. CERTIFICATE PG 70
4 1
ECOLOGY
Water pollution.
By the end of the lesson, the learner should be able to:
To identify causes and effects of water pollution.
To suggest control measures of water pollution.
Detailed discussion & Q/A.
video of water pollution
KLB BK III. P 60. CERTIFICATE PG 77
4 2
ECOLOGY
Water pollution.
By the end of the lesson, the learner should be able to:
To identify causes and effects of water pollution.
To suggest control measures of water pollution.
Detailed discussion & Q/A.
video of water pollution
KLB BK III. P 60. CERTIFICATE PG 77
4 3-4
ECOLOGY
Water pollution.
By the end of the lesson, the learner should be able to:
To identify causes and effects of water pollution.
To suggest control measures of water pollution.
Detailed discussion & Q/A.
video of water pollution
KLB BK III. P 60. CERTIFICATE PG 77
4 5
ECOLOGY
Soil pollution.
By the end of the lesson, the learner should be able to:
To identify causes and effects of soil pollution.
To suggest control measures of soil pollution.
Detailed discussion & Q/A.
text book
KLB BK III. P 62. CERTIFICATE PG 80
5 1
ECOLOGY
Radioactive emissions.
By the end of the lesson, the learner should be able to:
To identify effects of radioactive emissions.
To state uses of nuclear energy.
Brief discussion on radioactive emissions and nuclear energy
text book
KLB BK III. P 62. CERTIFICATE PG 72
5 2
ECOLOGY
Human diseases. Typhoid & cholera.
By the end of the lesson, the learner should be able to:
To identify disease predisposing factors.
To describe causative agents, symptoms, prevention of bacterial diseases.
Detailed discussion with probing questions.
text book
KLB BK III. P 63. CERTIFICATE PG 82
5 3-4
ECOLOGY
Human diseases. Typhoid & cholera.
By the end of the lesson, the learner should be able to:
To identify disease predisposing factors.
To describe causative agents, symptoms, prevention of bacterial diseases.
Detailed discussion with probing questions.
text book
KLB BK III. P 63. CERTIFICATE PG 82
5 5
ECOLOGY
Protozoan diseases.
By the end of the lesson, the learner should be able to:
To identify causal agents, symptoms, prevention and treatment of amoebic dysentery and malaria.
Detailed discussion, Q/A.
magazine
KLB BK III. PP 66. CERTIFICATE PG 83
6 1
ECOLOGY
Prevention and control of protozoan diseases.
By the end of the lesson, the learner should be able to:
To explain methods of preventing and controlling protozoan diseases.
CERTIFICATE PG  83
6 2
ECOLOGY
Prevention and control of protozoan diseases.
By the end of the lesson, the learner should be able to:
To explain methods of preventing and controlling protozoan diseases.
CERTIFICATE PG  83
6 3-4
ECOLOGY
Ascaris lumbricoides.
By the end of the lesson, the learner should be able to:
To identify adaptive features of Ascaris lumbricoides.
To state and explain effects of a parasite on the host.
To suggest preventive and control measures.
Group activities: Students examine preserved specimens of Ascaris lumbricoides and identify some adaptive features.

Detailed discussion.
Preserved specimens of Ascaris lumbricoides.
KLB BK III. P 67. CERTIFICATE PG 87
6 5
ECOLOGY
Ascaris lumbricoides.
By the end of the lesson, the learner should be able to:
To identify adaptive features of Ascaris lumbricoides.
To state and explain effects of a parasite on the host.
To suggest preventive and control measures.
Group activities: Students examine preserved specimens of Ascaris lumbricoides and identify some adaptive features.

Detailed discussion.
Preserved specimens of Ascaris lumbricoides.
KLB BK III. P 67. CERTIFICATE PG 87
7 1
ECOLOGY
Bilharzia.
By the end of the lesson, the learner should be able to:
To identify causal and transmission agents of bilharzia.
To describe effects of the parasite on its host.
To identify adaptive features of schistosoma.
Brief discussion
Q/A: Effects on host and control measures.
chart
KLB BK III. P 69. CERTIFICATE PG 86
7 2
REPRODUCTION IN PLANTS AND ANIMALS
Fertilisation process.
By the end of the lesson, the learner should be able to:
To explain the fertilisation process.
Discussion
Drawing diagrams.
chart
KLB BK III. PP. 113-114 CERTIFICATE PG 152
7 3-4
REPRODUCTION IN PLANTS AND ANIMALS
Implantation.
By the end of the lesson, the learner should be able to:
To define implantation.
To define ectopic pregnancy.
Drawing illustrative diagrams.
Discussion.
text book
KLB BK III. P. 114 CERTIFICATE PG 153
7 5
REPRODUCTION IN PLANTS AND ANIMALS
The placenta.
By the end of the lesson, the learner should be able to:
To describe the formation of the placenta and the structure of the placenta.
Exposition and discussion.
Chart- The placenta.
KLB BK III. P. 115 CERTIFICATE PG 159
8 1
REPRODUCTION IN PLANTS AND ANIMALS
Role of the placenta. Placental exchanges.
By the end of the lesson, the learner should be able to:
To state and explain the role of the placenta.
To identify substances allowed / not allowed to pass through the placenta
Exposition and discussion. Drawing diagrams showing placental exchanges.
Detailed discussion.
text book
KLB BK III. P. 116 CERTIFICATE PG 159
8 2
REPRODUCTION IN PLANTS AND ANIMALS
Pregnancy and hormones.
By the end of the lesson, the learner should be able to:
To identify functions of human oestrogen and progestrone during pregnancy.
Tabulate functional differences.
text book
CERTIFICATE PG 160
8 3-4
REPRODUCTION IN PLANTS AND ANIMALS
Pregnancy and hormones.
Abortion, miscarriage, birth.
By the end of the lesson, the learner should be able to:
To identify functions of human oestrogen and progestrone during pregnancy.
To describe processes of abortion, miscarriage and birth.
Tabulate functional differences.
Q/A: To elicit students responses on related issues.
text book
CERTIFICATE PG 160
KLB BK III. PP.
117-119 
8 5
REPRODUCTION IN PLANTS AND ANIMALS
Lactation and parental care.
By the end of the lesson, the learner should be able to:
To explain the role of oxytocin in milk let down.
To draw and label mammary glands.
Discussion

Drawing and labelling mammary glands.
Wall- charts mammary glands.
KLB BK III. P. 120 
9

Midterm exams and break

10 1
REPRODUCTION IN PLANTS AND ANIMALS
Secondary sexual characteristics.
By the end of the lesson, the learner should be able to:
To state secondary sexual characteristics in males and females.
Detailed discussion.
text book
10 2
REPRODUCTION IN PLANTS AND ANIMALS
Secondary sexual characteristics.
By the end of the lesson, the learner should be able to:
To state secondary sexual characteristics in males and females.
Detailed discussion.
text book
10 3-4
REPRODUCTION IN PLANTS AND ANIMALS
The menstrual cycle.
28-day menstrual cycle.
By the end of the lesson, the learner should be able to:
To explain the role of hormones in the menstrual cycle.
To represent hormonal levels on a 28-day chart.
Detailed discussion.
Open discussion.
Interpreting illustrative charts.
Chart- Phases of human menstrual cycle.
KLB BK III. P. 121 CERTIFICATE PG 151
KLB BK III. PP.
122-123 CERTIFICATE PG 152
10 5
REPRODUCTION IN PLANTS AND ANIMALS
28-day menstrual cycle.
By the end of the lesson, the learner should be able to:
To represent hormonal levels on a 28-day chart.
Open discussion.
Interpreting illustrative charts.
chart
KLB BK III. PP.
122-123 CERTIFICATE PG 152
11 1
REPRODUCTION IN PLANTS AND ANIMALS
Menopause, infertility and emerging issues.
By the end of the lesson, the learner should be able to:
To describe hormonal changes at menopause.
To discuss emerging issues related to infertility and menopause.
Open discussion.
text book
KLB BK III. P. 123 
11 2
REPRODUCTION IN PLANTS AND ANIMALS
Menopause, infertility and emerging issues.
By the end of the lesson, the learner should be able to:
To describe hormonal changes at menopause.
To discuss emerging issues related to infertility and menopause.
Open discussion.
text book
KLB BK III. P. 123 
11 3-4
REPRODUCTION IN PLANTS AND ANIMALS
Sexually Transmitted Infections & HIV/AIDS.
By the end of the lesson, the learner should be able to:
To identify the symptoms of STIs.
To explain the mode of transmission of STIs / AIDS and discuss methods of control.
To differentiate between HIV and AIDS.
Detailed discussion.
Q/A: Distinction and relationship between HIV and AIDS.
Chart- STIs causal agents, symptoms, prevention and control measures.
PP.
123-125 CERTIFICATE PG 169
11 5
REPRODUCTION IN PLANTS AND ANIMALS
Sexually Transmitted Infections & HIV/AIDS.
By the end of the lesson, the learner should be able to:
To identify the symptoms of STIs.
To explain the mode of transmission of STIs / AIDS and discuss methods of control.
To differentiate between HIV and AIDS.
Detailed discussion.
Q/A: Distinction and relationship between HIV and AIDS.
Chart- STIs causal agents, symptoms, prevention and control measures.
PP.
123-125 CERTIFICATE PG 169
12-13

Endterm and exams and closure of school

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