Classes and Uses of Crops (III) Lesson note

Detailed Lesson Note

School: Junior Secondary School
Subject: Agricultural Science
Class: JSS 1 (Grade 7)
Duration: 40 minutes
Topic: Classes and Uses of Crops
Sub-topic: Classification of Crops Based on Food Value
Date: To be inserted by the teacher
Period: To be inserted by the teacher
Class Size: To be inserted by the teacher

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Instructional Objectives

By the end of the lesson, students should be able to:

1. Define crop classification and list at least three (3) classes of crops based on food value. (Knowledge – Lower domain)
2. Differentiate between cereals, legumes, roots and tubers, with at least one example each. (Comprehension/Application – Middle domain)
3. Correctly categorize a given set of crops into their food value classes during classroom activity. (Analysis – Higher domain)
4. Show interest and appreciation for crop classification through active participation in discussions and group tasks. (Affective domain)

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Instructional Materials

• Chart showing crop classification
• Real samples or pictures of crops (maize, beans, yam, cassava, orange, etc.)
• Flash cards with crop names
• Whiteboard/marker

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Content of the Lesson

1. Meaning of Crop Classification

• Crop classification means grouping crops into categories based on their characteristics, uses, or food value.
• It helps us understand crops better and know how they benefit our bodies.

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2. Classification of Crops Based on Food Value

Crops can be grouped based on the nutrients they provide:

a. Cereals (Energy-giving foods):

• Rich in carbohydrates.
• Examples: maize, rice, millet, sorghum, wheat.

b. Legumes (Body-building foods):

• Rich in protein.
• Examples: beans, groundnut, soybean, cowpea.

c. Roots and Tubers (Energy foods):

• Mostly carbohydrates, eaten for energy.
• Examples: yam, cassava, sweet potato, cocoyam.

d. Fruits and Vegetables (Protective foods):

• Rich in vitamins and minerals, protect the body from diseases.
• Examples: mango, orange, pawpaw, spinach, tomato, okra.

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Step-by-Step Procedure

Step 1: Introduction (5 minutes)

• Teacher greets students and sets class in order.
• Teacher asks: “What food did you eat this morning?”
• Students respond (e.g., rice, yam, beans).
• Teacher links responses to the day’s topic: “These foods come from crops, and today we will classify them according to their food value.”

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Step 2: Presentation (20 minutes)

Mode: Discussion, Demonstration, and Explanation

1. Explanation – Teacher explains meaning of crop classification.
2. Discussion – Explains each class of crops based on food value with examples.
3. Demonstration – Teacher shows real crop samples/pictures and asks students to identify them.
4. Interactive Activity – Students use flash cards to group crops under the correct food class on the board.

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Step 3: Student Activities (10 minutes)

• Teacher divides the class into groups.
• Each group is given names of crops (e.g., yam, beans, maize, orange, cassava).
• Students classify them into the correct food value classes.
• Groups present their results to the class.
• Teacher corrects mistakes and reinforces main points.

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Step 4: Evaluation (5 minutes)

Teacher evaluates learning by asking:

1. What is crop classification?
2. Mention two examples of cereals and two examples of legumes.
3. Differentiate between roots and tubers.
4. Classify yam, rice, and beans according to food value.

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Assignment

Write down five crops you ate in your last three meals and classify them according to their food value.

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References

• Junior Secondary Agricultural Science for Nigerian Schools, Book 1
• WAEC/NECO Agric Science past questions

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