Post, Harvest Activities, Processing and Preservation of Crops for Primary 5

Class: Primary Five
Term: First Term
Subject: Pre-vocational Studies
Curriculum Theme: agricultural Science
previous Lesson: Harvesting Matured Crops, How To Grow Crops
Topic: Post-Harvest Activities
Content/Learning Area: Processing, Preservation, Importance of Post-harvest activities
Time Allocation: 40 minutes

Performance Objectives

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

• Cognitive Domain:

1. Explain what post-harvest activities are and why they are meaningful.
2. Identify various methods used for processing and preserving crops.
3. Explain the importance of proper post-harvest handling in reducing food wastage.

• Psychomotor Domain:

1. Demonstrate the correct techniques for sorting and storing crops.

• Affective Domain:

1. Appreciate the role of proper post-harvest handling in reducing food wastage.

• Social Domain:

1. Work collaboratively with peers during activities.

Reference Materials

• 9 – Years Basic Education Curriculum
• Abuja Educational Resource Center Scheme of Work
• NAPPS national Unified Scheme of Work
• Online Facts
• Relevant textbooks

Instructional materials

To deliver this lesson, the teacher will employ the help of the following materials:

• Whiteboard or chart
• Markers or chalk
• Pictures or real examples of crops
• Examples of different preservation methods (e.g., dried beans, canned fruits)

Rationale for the Lesson

This lesson is crucial as it teaches pupils the importance of preserving food and reducing waste. Understanding post-harvest activities ensures that the hard work of farming doesn’t go to waste, leading to better food security and economic benefits.

Prerequisite/Previous Knowledge

The teacher will begin by asking pupils what they remember from the previous lesson on harvesting. A brief review of harvesting techniques will be conducted, followed by introducing the concept of post-harvest activities as the next crucial step in crop management.

Lesson Content

Post-Harvest Activities

Post-harvest activities are the steps taken after harvesting to prepare crops for use, storage, or sale. There are two main types: processing and preservation.

Processing

Processing involves preparing crops for use.Examples are:

1. Shelling (removing maize kernels from the cob)
2. Milling (removing rice husks)
3. Sorting (separating crops by size and quality)
4. Threshing (separating grains from stalks)
5. Cleaning (removing dirt and debris from harvested crops)

Preservation

Preservation involves storing crops to prevent spoilage. Methods include:

1. Drying (removing moisture from beans and grains)
2. Airtight containers (protecting crops from pests and moisture)
3. Freezing (slowing down spoilage in perishable crops)
4. Bottling (preserving fruits and vegetables)
5. Refrigeration (slowing down spoilage using low temperatures)
6. Salting (preserving meat and fish)
7. Pickling (preserving food in vinegar or brine)
8. Smoking (preserving meat and fish using smoke)
9. Canning (sealing food in airtight containers after processing)
10. Irradiation (exposing food to ionizing radiation to kill microorganisms)

Proper preservation extends shelf life and reduces food waste.

Importance of Post-Harvest Activities

Post-harvest activities are important for several reasons. the following are some of the reasons:

1. Prevents spoilage
2. Reduces food wastage
3. Enhances marketability
4. Extends shelf life
5. Maintains nutritional value
6. Improves farmer profitability
7. Supports food security
8. Increases availability of food
9. adds value to agricultural products

Teaching Methods

To deliver this lesson,‌ ⁤the teacher will⁤ adopt⁤ the following methods: Discussion, demonstration, Question and Answer.

Instructional Procedures

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

Step 1: Introduction

Time: 5 minutes
Teaching Skill: Set Induction
Teacher’s Activity: Review previous lesson, introduce post-harvest activities.
Pupils’ Activity: Participate in discussion,listen attentively.

Step 2: Clarification of Key Concepts

Time: 10 minutes
Teaching Skill: Explaining
Teacher’s Activity: Explain processing and preservation methods using visuals.
Pupils’ Activity: Listen, ask questions, take notes.

Step 3: Demonstration/Guided Practice

Time: 10 minutes
Teaching Skill: Demonstrating
Teacher’s Activity: Demonstrate sorting and storing techniques.
Pupils’ Activity: Observe, participate in guided practice.

Step 4: Autonomous Practice

Time: 5 minutes
Teaching Skill: Monitoring
Teacher’s Activity: Supervise pupils as they work independently.
pupils’ Activity: Complete assigned tasks.

Step 5: Note-Taking

Time: 5 minutes
Teaching Skill: Guiding
Teacher’s Activity: Guide pupils in summarizing key points.Pupils’ Activity: take notes, summarize key concepts.

Step 6: Evaluation/Review

Time: 5 minutes
Teaching Skill: Questioning
Teacher’s Activity: Ask review questions.
Pupils’ Activity: Answer questions.

Objective-aligned checks:

1. Explain what post-harvest activities are and why they are meaningful.
2. Identify various methods used for processing and preserving crops.
3. Explain the importance of proper post-harvest handling in reducing food wastage.

Step 7: conclusion

Time: 2 minutes
Teaching Skill: Summarizing
Teacher’s Activity: Summarize the lesson and assign homework.
Pupils’ Activity: Listen and note homework.

Lesson Keywords

• Post-Harvest – Activities carried out after harvesting crops.
• Processing – Preparing crops for immediate use.
• Preservation – Storing crops to prevent spoilage.
• Spoilage – The process of food decaying and becoming unfit for consumption.
• Shelf Life – The length of time a food item remains usable.

Lesson Evaluation

To evaluate the learning, the teacher asks pupils to:

1. What are post-harvest activities, and why are they important?
2. Name two processing methods for crops.
3. List three preservation methods and explain how they work.
4. How does proper preservation reduce food waste?

Assignment/Homework

1. Research and write about a specific preservation method used in your community.
2. List five post-harvest activities carried out on a farm you know.

Differentiation

• For slower learners: Provide one-on-one assistance and simplified explanations.
• For advanced learners: Encourage them to research additional preservation methods and present thier findings to the class.
• For visual/auditory/kinesthetic learners: Use visual aids, demonstrations, and hands-on activities to cater to different learning styles.

Note for Teachers

Ensure to use real-life examples and practical demonstrations to make the lesson engaging and relatable for the pupils. Encourage active participation and provide constructive feedback to reinforce learning.