DETAILED LESSON NOTE
School: Junior Secondary School
Subject: Agricultural Science
Class: JSS 1 (Grade 7)
Week: Five
Topic: Plant Forms and Distribution of Crops
Sub-topic: Factors Affecting Distribution of Crops
Duration: 40 minutes
Date: To be inserted by the teacher
Period: To be inserted by the teacher
Instructional Materials:
- Chart of Nigeria showing crop zones
- Pictures of crops (rice, cocoa, groundnut, tea)
- Chalkboard/marker board
Lesson
Objectives
By the end of the lesson, students
should be able to:
- Lower Domain (Knowledge): List at least three factors affecting distribution of
crops.
- Middle Domain (Comprehension): Explain how one physical factor (climate) influences
crop distribution in Nigeria.
- Higher Domain (Application/Analysis): Analyze why rice is commonly grown in swampy areas
while groundnut is grown in drier regions.
- Affective Domain (Attitude): Demonstrate appreciation of the importance of
understanding crop distribution to improve food supply in Nigeria.
Lesson
Development
Step
1: Introduction/Set Induction (5 minutes)
- Teacher greets the class and checks attendance.
- Teacher shows pictures of rice, cocoa, and groundnut.
- Teacher asks:
“Why do you think rice is common in swampy areas while cocoa is grown in the south?” - Teacher links students’ responses to the new topic: Factors
Affecting Distribution of Crops.
Students’ Response:
Students give different answers such as “because of water,” “because of soil,”
“because of sun,” etc.
Step
2: Presentation (25 minutes)
A. Meaning of Crop Distribution (5
minutes)
- Teacher explains that crop distribution refers
to how crops are spread across different regions of the country, depending
on conditions suitable for their growth.
Students’ Activity:
Students repeat the definition in their own words.
B. Factors Affecting Distribution of
Crops (15 minutes)
Teacher discusses one after another with examples:
- Climate (Rainfall, Temperature, Sunshine):
- Rice grows in swampy, water-logged areas.
- Cocoa grows in areas with high rainfall like Southern
Nigeria.
- Soil Type and Fertility:
- Groundnut prefers sandy soil in the North.
- Cocoa grows best in loamy soil.
- Topography (Landform):
- Tea and coffee grow on highlands.
- Rice grows well in lowland valleys.
- Pests and Diseases:
- Cassava may not do well in areas with high cassava
mosaic disease.
- Human and Economic Factors:
- Market availability, transportation, labour supply,
and government policies also determine where crops are grown.
Students’ Activity:
- Students look at the chart/map of Nigeria and identify
zones where rice, cocoa, and groundnut are grown.
- In groups, they discuss why cocoa cannot grow in the
North.
C. Analysis and Application (5
minutes)
- Teacher asks:
“Why is rice grown in swampy areas while groundnut grows in dry sandy areas?” - Teacher guides students to analyze:
- Rice needs a lot of water → swampy areas.
- Groundnut needs dry sandy soil → Northern region.
Students’ Activity:
Students answer with examples from their local environment.
Step
3: Evaluation (5 minutes)
Teacher evaluates by asking:
- List three factors affecting distribution of crops.
- Explain how climate influences crop growth.
- Why is rice not grown in desert areas of Northern
Nigeria?
- Which factor makes tea suitable for highland areas?
Expected Answers:
- Climate, soil, topography, pests/diseases,
human/economic factors.
- Climate determines temperature, rainfall, and sunshine
which affect growth.
- Lack of water (low rainfall).
- Cool temperature of highlands.
Step
4: Assignment (5 minutes)
- Write short notes on how the following affect crop
distribution in Nigeria:
a) Soil fertility
b) Availability of market
c) Rainfall
Step
5: Conclusion (Closing the Lesson)
- Teacher summarizes that crop distribution is mainly
influenced by climate, soil, topography, pests/diseases, and human/economic
factors.
- Teacher encourages students to observe which crops grow
well in their own communities and why.
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