Class: Senior Secondary School 1 (SS 1)
Term: 2nd Term
Week: 10
Age: 15 years
Duration: 45 minutes
Subject: Catering Craft
Curriculum Theme: Entrepreneurship (Trade Subjects)
Previous Lesson: Dairy Products: Types, Preservation and Uses.
Topic: STUDY OF FOOD COMMODITIES AND PRINCIPLES OF COOKING METHODS
Subject Matter: Types of eggs, factors for choosing eggs, food value of eggs, structure of an egg, uses of egg in cookery, methods of cooking eggs.

Specific Objectives

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

Cognitive Domain:

List different types of eggs.
State the factors to consider when choosing eggs.
Describe the food value of eggs.
Identify the various parts of an egg.
Mention at least three uses of eggs in cookery.
Explain two methods of cooking eggs.

Affective Domain:

Appreciate the versatility and nutritional benefits of eggs.
Participate actively in discussions about egg selection and preparation.

Psychomotor Domain:

Demonstrate the proper handling of eggs.
Prepare a simple boiled or scrambled egg.

Collaborate with peers during practical activities.

Reference Materials

The following resources were used in planning this lesson:

9 Years Basic Education Curriculum for Catering Craft Practice.
State Unified Scheme of Work for Senior Secondary Schools.
Catering Craft Practice for Senior Secondary Schools Book 1.

Instructional Materials

The teacher will teach this lesson with the aid of:

Various types of eggs (chicken, duck, quail).
Charts showing the structure of an egg.
Cooking equipment (saucepan, frying pan, spatula).
Cooking utensils (bowls, spoons).
Heat source (gas cooker/stove).
Whiteboard and marker.

Rationale for the Lesson

Understanding eggs is important because they are a common and affordable food source with high nutritional value. This lesson helps pupils learn how to select, store, and prepare eggs safely and effectively for various culinary uses, which is useful in daily life and for potential catering careers.

Prerequisite/Previous Knowledge

Pupils have basic knowledge of different food items and some simple cooking terms.

Lesson Content/Board Summary

STUDY OF FOOD COMMODITIES: EGGS

Types of Eggs

Eggs are a common food item from various bird species. The type of egg usually refers to its origin.

The following are common types of eggs:

Chicken eggs (most common)
Duck eggs
Quail eggs
Goose eggs
Turkey eggs

Factors for Choosing Eggs

When selecting eggs for consumption or cookery, certain factors should be considered to ensure quality and safety.

The following are factors for choosing eggs:

Shell Condition: Choose eggs with clean, uncracked shells.
Size: Select the appropriate size for the recipe (e.g., small, medium, large, extra-large).
Freshness: Fresh eggs sink in water and have firm yolks and thick whites.
Expiry Date: Check the best-before date on the carton.
Grade: Graded eggs (e.g., Grade A) indicate quality standards.

Food Value of Eggs

Eggs are highly nutritious and provide essential nutrients.

The following are key nutritional components of eggs:

Protein: High-quality protein, essential for body building and repair.
Vitamins: Rich in Vitamin D, B12, A, E, K.
Minerals: Contains iron, zinc, selenium, phosphorus.
Fats: Mainly in the yolk, providing energy.
Cholesterol: Present in the yolk, but dietary cholesterol has less impact on blood cholesterol for most people.

Structure of an Egg

An egg has several distinct parts, each with a specific function.

The following are the main parts of an egg:

Shell: The hard, outer covering that protects the inner contents.
Shell Membrane: Two thin membranes just inside the shell, providing defense against bacteria.
Air Cell: An air pocket formed at the large end of the egg between the two membranes. It increases in size as the egg ages.
Albumen (Egg White): The clear, thick liquid that surrounds the yolk. It is mostly protein and water.
Yolk: The yellow, central part of the egg, rich in fat, vitamins, and minerals.
Chalaza: Two twisted, rope-like structures that anchor the yolk in the center of the egg white.

Uses of Egg in Cookery

Eggs are versatile ingredients used in many ways in cooking and baking.

The following are common uses of eggs in cookery:

Binding: Holds ingredients together (e.g., meatballs, burgers).
Thickening: Used to thicken sauces, custards, and soups.
Leavening/Aerating: Whipped egg whites incorporate air, making cakes and soufflés light.
Emulsifying: Helps to combine oil and water (e.g., mayonnaise).
Coating: Used to coat foods before frying or baking (e.g., breaded chicken).
Garnishing: Sliced or chopped hard-boiled eggs for decoration.
Main Dish: Cooked and served as a standalone meal (e.g., omelets, fried eggs).

Methods of Cooking Eggs

Eggs can be cooked using various methods, each yielding a different texture and taste.

The following are common methods of cooking eggs:

Boiling: Eggs are cooked in their shells in hot water.
- Soft-boiled: Yolk is runny, white is set.
- Medium-boiled: Yolk is slightly set, white is firm.
- Hard-boiled: Yolk and white are completely firm.
Scrambling: Eggs are beaten and cooked in a pan, stirring constantly until set into soft curds. Milk or cream can be added for extra creaminess.
Frying: Eggs are cooked in a pan with a small amount of fat.
- Sunny-side up: Yolk is runny, white is set.
- Over easy/medium/hard: Flipped to cook both sides.
Poaching: Eggs are cooked without their shells in simmering water or other liquid.
Baking: Eggs are cooked in an oven, often in ramekins or as part of a casserole.
Omelette: Beaten eggs cooked in a pan, often folded over fillings.

Teaching Methods/Instructional Techniques

Discussion, Lecture, Demonstration, Question and Answer, Visual Aids, Practical Activity

Instructional Procedures

Step 1: Introduction

Time: 5 minutes
Teaching Skill: Set Induction
Teacher’s Activity: The teacher greets the pupils and asks them to name common food items they eat for breakfast. The teacher then specifically asks about eggs and their different forms of preparation.
Pupils’ Activity: Pupils respond to the questions, naming various food items and mentioning ways they eat eggs.
Learning Point: Pupils recall prior knowledge about food items and are introduced to the lesson’s focus on eggs.

Step 2: Types of Eggs and Factors for Choosing Eggs

Time: 10 minutes
Teaching Skill: Explanation/Discussion
Teacher’s Activity: The teacher presents different types of eggs (e.g., chicken, duck) and discusses their characteristics. The teacher then explains and discusses the important factors to consider when choosing eggs, such as shell condition, freshness, and expiry date, using real eggs as examples.
Pupils’ Activity: Pupils observe the different eggs, participate in the discussion, and ask questions about egg selection.
Learning Point: Pupils learn to identify various types of eggs and understand how to select quality eggs.

Step 3: Food Value and Structure of an Egg

Time: 10 minutes
Teaching Skill: Explanation/Visualisation
Teacher’s Activity: The teacher explains the nutritional benefits of eggs, highlighting their protein, vitamin, and mineral content. Using a chart or a real egg broken into a dish, the teacher identifies and explains the different parts of an egg (shell, albumen, yolk, chalaza, air cell).
Pupils’ Activity: Pupils listen attentively, observe the chart/egg, and identify the various parts and their nutritional significance.
Learning Point: Pupils understand the nutritional value of eggs and can describe their internal structure.

Step 4: Uses of Egg in Cookery

Time: 5 minutes
Teaching Skill: Brainstorming/Explanation
Teacher’s Activity: The teacher asks pupils to brainstorm different ways eggs are used in cooking and baking. The teacher then elaborates on these uses, such as binding, thickening, leavening, and emulsifying, providing examples for each.
Pupils’ Activity: Pupils suggest uses of eggs in cookery and listen to the teacher’s explanations.
Learning Point: Pupils can identify and explain various culinary applications of eggs.

Step 5: Methods of Cooking Eggs (Demonstration)

Time: 10 minutes
Teaching Skill: Demonstration/Practical
Teacher’s Activity: The teacher demonstrates two common methods of cooking eggs: boiling (soft, medium, hard) and scrambling. The teacher explains each step clearly, highlighting safety precautions and desired outcomes for each method.
Pupils’ Activity: Pupils observe the demonstration carefully, noting the steps and techniques involved in boiling and scrambling eggs.
Learning Point: Pupils understand the practical steps for boiling and scrambling eggs.

Step 6: Evaluation/Review

Time: 5 minutes

Teaching Skill: Questioning/Assessment

Teacher’s Activity: The teacher evaluates the learning by asking the following questions:

Mention three types of eggs.
State two factors to consider when choosing eggs.
List three uses of eggs in cookery.
Describe the difference between soft-boiled and hard-boiled eggs.

Pupils’ Activity: Pupils answer orally and in writing.

Learning Point: Pupils demonstrate understanding of the lesson.

Step 7: Conclusion

Time: 2 minutes
Teaching Skill: Summarisation
Teacher’s Activity: The teacher summarises the key points of the lesson, reiterating the importance of eggs as a food commodity and their various uses and cooking methods. The teacher assigns homework: “Practice making a scrambled egg at home and write down the steps you followed.”
Pupils’ Activity: Pupils listen to the summary and copy the homework.
Learning Point: Pupils consolidate their learning and prepare for independent practice.

Lesson Keywords

Albumen – The clear liquid, or egg white, which is primarily protein and water.
Yolk – The yellow, central part of the egg, rich in fats, vitamins, and minerals.
Chalaza – The rope-like structures that anchor the yolk in the center of the egg.
Boiling – A cooking method where eggs are cooked in their shells in hot water.
Scrambling – A cooking method where beaten eggs are stirred while cooking in a pan until set.
Emulsifying – The process where eggs help to combine ingredients that do not naturally mix, like oil and water.

Differentiation

For pupils who grasp concepts quickly, the teacher can encourage them to research other cooking methods for eggs or different egg-based dishes. For pupils who need more support, the teacher will provide additional one-on-one guidance during the practical demonstration and offer simplified explanations of the egg’s structure and uses.

Note for teachers using this lesson plan

Ensure all instructional materials, especially fresh eggs and cooking equipment, are available and in good working condition before the lesson begins. Emphasise hygiene and safety during any practical demonstration. Encourage pupils to ask questions and actively participate to ensure a comprehensive understanding of the topic.