Meaning, Classification of Insects and Pests with Examples Agricultural Science Primary 2 Second Term Lesson Notes Week 2

Comprehensive Lesson Plan: Agricultural Science (Primary 2)

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Subject:

Agricultural Science

Class:

Basic 2 / Primary 2 / Year 2

Term:

Second Term / 2nd Term

Week:

Week 2

Age:

6–8 years

Topic:

Insect Pests

Sub-topic:

Meaning and Classification of Insects with Examples

Duration:

40 minutes

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Behavioural Objectives

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

1. Define insect pests.
2. Identify and classify types of insect pests.
3. List examples of insects under each classification.

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Keywords:

• Insect
• Pests
• Classification
• Harmful
• Piercing

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Set Induction:

The teacher begins by showing pictures of different insects (e.g., butterflies, grasshoppers, termites) and asks pupils to describe them.

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Entry Behaviour:

Pupils already know about simple farm tools used in agriculture.

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Learning Resources and Materials:

• Wall charts showing types of insects.
• Flashcards with insect names.
• Online resources.
• Lagos State Scheme of Work.

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Building Background/Connection to Prior Knowledge:

The teacher reminds pupils of the importance of farm tools in planting and maintaining crops, linking this to the effects of harmful insects on crops.

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Embedded Core Skills:

• Critical thinking.
• Communication.
• Observation.

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Learning Materials:

• Printed diagrams of insects.
• Plastic models of insects (optional).

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Reference Books:

• Lagos State Scheme of Work for Basic 2.
• Agricultural Science Textbooks for Primary Schools.

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Instructional Materials:

• Visual aids (charts and drawings).
• Markers.
• Whiteboard.

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Content:

Meaning of Insects

1. Insects are tiny living organisms found almost everywhere.
2. Some insects have wings and can fly, while others cannot.
3. Insects can be helpful (good insects) or harmful (bad insects).

Examples of Good Insects:

1. Butterflies.
2. Bees.
3. Ladybugs.

Examples of Harmful Insects:

1. Termites.
2. Grasshoppers.
3. Caterpillars.

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Classification of Insects and Examples

1. Piercing and Sucking Insects
   • These insects bite and suck nutrients from plants.
   • Examples: Thrips, moths, green spider mites.
2. Biting and Chewing Insects
   • These insects eat plant leaves and stems.
   • Examples: Grasshoppers, termites, armyworms.
3. Boring Insects
   • These insects create holes in plants and damage crops.
   • Examples: Stem borers, weevils, beetles.

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Parts of an Insect Body

1. Head: Contains eyes, antennae, feelers, and mouth.
2. Thorax: Connects the head and abdomen, and carries the legs and wings.
3. Abdomen: Contains internal organs and legs.

Note:

• Insects have six legs in total.
• A spider is not an insect because it has eight legs and two body parts.

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Presentation Steps:

1. Step 1: Revise the previous lesson on simple farm tools.
2. Step 2: Introduce the topic by defining insects and explaining their importance to farmers.
3. Step 3: Discuss the classifications of insect pests with examples.
4. Step 4: Explain the major parts of an insect’s body using diagrams or models.
5. Step 5: Engage pupils in identifying insects around their school environment.

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Teacher’s Activities:

1. Show pictures of insects and ask pupils to name them.
2. Explain the difference between good and harmful insects.
3. Guide pupils in classifying insects into categories.
4. Use role-play to illustrate how insects damage crops.

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Learners’ Activities:

1. Observe pictures and name insects.
2. Participate in class discussions about insect classification.
3. List examples of insects under each category.
4. Draw their favorite insect and label its parts.

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Evaluation Questions:

1. Insects are _______ living things.
   (a) Big (b) Tiny (c) Large (d) Huge
2. ______ insects help farmers.
   (a) Bad (b) Good (c) Harmful (d) Dangerous
3. An example of a good insect is _______.
   (a) Termite (b) Butterfly (c) Weevil (d) Grasshopper
4. A bad insect is an _______ to farmers.
   (a) Friend (b) Enemy (c) Helper (d) Assistant
5. ______ insects bite and suck.
   (a) Boring (b) Piercing and sucking (c) Chewing (d) Jumping
6. Grasshoppers are ______ insects.
   (a) Biting and chewing (b) Boring (c) Flying (d) Sucking
7. The body of an insect has ______ parts.
   (a) Two (b) Three (c) Four (d) Five
8. The thorax connects the ______ and abdomen.
   (a) Head (b) Legs (c) Wings (d) Mouth
9. The abdomen contains ______.
   (a) Eyes (b) Wings (c) Ears (d) Antennae
10. A spider has ______ legs.
    (a) Six (b) Eight (c) Ten (d) Four
11. Good insects include ______ and bees.
    (a) Grasshoppers (b) Butterflies (c) Beetles (d) Thrips
12. An example of a boring insect is ______.
    (a) Weevil (b) Caterpillar (c) Ant (d) Moth
13. Termites belong to the ______ group.
    (a) Chewing (b) Sucking (c) Flying (d) None
14. The head contains the ______.
    (a) Antennae (b) Wings (c) Abdomen (d) Thorax
15. Insects are found ______.
    (a) Nowhere (b) Everywhere (c) Somewhere (d) Only in farms

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Class Activity Discussion (FAQs):

1. What are insects?
   • Insects are tiny organisms found everywhere.
2. Name three good insects.
   • Butterfly, bee, ladybug.
3. Why do farmers dislike harmful insects?
   • They destroy crops and harvest.
4. What is the function of the thorax?
   • It connects the head and abdomen.
5. How many legs do insects have?
   • Six legs.
6. What are piercing and sucking insects?
   • Insects that bite and suck nutrients.
7. Name a boring insect.
   • Weevil.
8. Why is a spider not an insect?
   • It has two body parts and eight legs.
9. Name an example of a chewing insect.
   • Grasshopper.
10. What is the abdomen?
    • The part of the body that houses legs and wings.

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Assessment:

1. Define insect pests.
2. List three classifications of insect pests.
3. Give two examples of piercing insects.
4. State one difference between a spider and an insect.
5. Name the three major parts of an insect’s body.

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Conclusion:

• The teacher reviews the lesson and provides feedback.
• Pupils are asked to draw and color their favorite insect.

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