Class: Primary 5
Term: 2nd Term
Subject: Pre-Vocational Studies
Curriculum Theme: Agricultural Science
Previous Lesson: Problems Of Weeds To Farmers
Topic: Biological Control Of Crop Weeds, Pests And Diseases
Content/Learning Area: Biological Control Of Crop Weeds, Pests And Diseases
Time Allocation: 40 minutes

Performance Objectives

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

Cognitive Domain: Define biological control and list examples of organisms used for biological control.
Affective Domain: Appreciate the importance of using natural methods to control pests and weeds.
Psychomotor Domain: Demonstrate how biological control is implemented on a sample farm.
Social Domain: Discuss the benefits of biological control to farmers during group work.

Reference Materials

The following resources were used in planning this lesson:

9 – Years Basic Education Curriculum (Abuja Educational Resource Center)
Scheme of Work (NAPPS National Unified Scheme of Work)
Online Facts from: Wikipedia – Biological pest control
Relevant Textbooks

Instructional Materials

To deliver this lesson, the teacher will use the following materials:

Charts showing common crop pests and their natural predators.
Live samples of natural predators (e.g., ladybugs, praying mantises).
A small model farm setup to demonstrate biological control.

Rationale for the Lesson

Understanding biological control helps pupils recognize environmentally pleasant ways of managing pests, weeds, and diseases, ensuring sustainable farming practices.

Prerequisite/Previous Knowledge

Pupils are already familiar with the problems caused by weeds, pests, and diseases in farming, as discussed in the previous lesson.

Lesson Content

Biological Control Of Crop Weeds, Pests And Diseases

Crops can be damaged by weeds, pests, and diseases, which reduces the farmer’s yield. Controlling them is essential to ensure healthy crops.

Biological control involves the use of natural organisms, such as predators, parasites, or pathogens, to control pests and weeds. This method is environmentally friendly and sustainable.

Examples of biological control methods:

The following are examples of biological control methods:

Predators: Ladybugs eat aphids that damage crops.
Parasites: Wasps lay eggs in caterpillars, stopping them from eating crops.
Pathogens: Fungi and bacteria that naturally kill weeds or pests.
Competitors: Using a non-harmful plant species to outcompete and suppress weed growth.
Herbivores: Introducing specific insects or animals that feed on and control weed populations.

Teaching Methods

To deliver this lesson,‌ ⁤the teacher will⁤ adopt⁤ the following methods: Lecture, Exhibition, Discussion, Question and Answer, Collaborative Learning, Visual Aids.

Instructional Procedures

To deliver this lesson, the teacher will adopt the following steps:

Step 1: Introduction

Time: 5 mins
Teaching Skill: Set Induction
Teacher’s Activity: Asks pupils to recall problems caused by pests and weeds.
Pupils’ Activity: Answer questions and share ideas.

Step 2: Clarification of Biological Control

Time: 10 mins
Teaching Skill: Explanation
Teacher’s Activity: Explains biological control with examples (ladybugs for aphids,etc.).
pupils’ Activity: Listen attentively and observe materials.

Step 3: Demonstration of Biological Control

Time: 10 mins
Teaching Skill: Demonstration
Teacher’s Activity: Shows live samples and demonstrates how predators help control pests.
Pupils’ Activity: Watch and participate in setting up the demonstration farm.

Step 4: Note-Taking

time: 5 mins
Teaching skill: Guided writing
Teacher’s Activity: Guides pupils in copying key points on biological control.
Pupils’ Activity: Copy notes into their notebooks.

step 5: Group Activity

Time: 5 mins
Teaching Skill: Discussion
Teacher’s Activity: Divides pupils into groups to discuss the benefits of biological control.
Pupils’ Activity: Discuss within groups and share their conclusions.

Step 6: Evaluation/Review

Time: 3 mins
Teaching Skill: Oral questioning
Teacher’s Activity: Asks questions to evaluate pupils’ understanding of the topic.
Pupils’ Activity: Answer questions orally.

Objective-aligned checks:

Define biological control and list examples of organisms used for biological control.
Demonstrate how biological control is implemented on a sample farm.

Step 7: Conclusion

Time: 2 mins
Teaching Skill: Summarization
Teacher’s Activity: Summarizes the lesson and reiterates key points.
Pupils’ Activity: Listen and ask questions for clarity.

Lesson keywords

Biological Control – Using natural organisms to control pests and weeds.
Predators – Organisms that hunt and eat other organisms.
Parasites – Organisms that live on or in a host organism and benefit by deriving nutrients at the host’s expense.
Pathogens – Microorganisms that can cause disease.
Aphids – Small sap-sucking insects that can damage crops.

Lesson evaluation

To evaluate the learning, the teacher asks pupils to:

Define biological control.
Name two organisms used in biological control and the pests they control.
Explain one benefit of biological control to farmers.
List one example of how biological control is better than chemical control.

Assignment/Homework

Research and write about another example of biological control used in agriculture.
Draw a diagram showing how ladybugs help control aphids on a farm.
Interview a local farmer about their experiences with pest control methods.

Differentiation

For slower learners: Provide simplified explanations and visual aids, and pair them with more advanced learners for peer support.
For advanced learners: Challenge them to research and present on more complex biological control methods or conduct a small experiment.
For visual/auditory/kinesthetic learners: Use charts, videos, and hands-on activities to cater to different learning styles.

Note for Teachers

Be sure to use relatable examples when introducing biological control. If possible, provide real-life samples or videos for better engagement. Encourage pupils to share their own ideas on how biological control can be applied locally.
Happy teaching!