Class: Senior Secondary School 1 (SS1, SS 1, SSS1, SSS 1)
Term: First Term
Week: 5
Age: 15 years
Duration: 45 minutes
Subject: Food and Nutrition
Curriculum Theme: Food and Nutrition
Previous Lesson: Consequences of poor nutrition.
Topic: Basic Food Nutrients
Subject Matter: Classification of food, sources of food, functions of food, grouping foods by nutrients

Specific Objectives

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

Cognitive Domain:

Define basic food nutrients.
Classify food nutrients into their main groups.
Identify various sources of different food nutrients.
State the functions of each class of food nutrients.

Affective Domain:

Appreciate the importance of consuming a balanced diet.
Value healthy eating habits for proper growth and development.

Psychomotor Domain:

Arrange different foodstuffs according to their nutrient content.
Differentiate between various food groups based on their primary functions.

Discuss with peers the impact of food choices on health.
Promote healthy eating practices within their community.

Reference Materials

The following resources were used in planning this lesson:

9 Years Basic Education Curriculum for Home Economics (Senior Secondary Education).
State Unified Scheme of Work for Senior Secondary School Food and Nutrition.
Anyanwu, A.C. (2018). Comprehensive Food and Nutrition for Senior Secondary Schools. A. Johnson Publishers.
https://www.who.int/news-room/fact-sheets/detail/healthy-diet
https://www.fao.org/nutrition/en/

Instructional Materials

The teacher will teach this lesson with the aid of:

Charts showing classes, sources, and functions of food nutrients.
Sample food items (e.g., yam, beans, groundnut, orange, egg).
Food nutrient classification table.

Rationale for the Lesson

This lesson helps pupils understand what basic food nutrients are and their roles in the body. Knowing about different food nutrients enables pupils to make informed food choices, which is important for maintaining good health and preventing diet-related illnesses.

Prerequisite/Previous Knowledge

Pupils have some basic knowledge of different types of food eaten at home and their general importance from their primary school science lessons.

Lesson Content/Board Summary

Basic Food Nutrients

Definition of Food Nutrients

Food nutrients are chemical substances found in food that are essential for the maintenance of life and for growth, reproduction, and health. They are vital for the body to function properly.

Classification of Food Nutrients

Food nutrients are generally classified into two main groups:

Macronutrients: These are needed by the body in large quantities and provide energy. They include carbohydrates, proteins, and fats.
Micronutrients: These are needed by the body in small quantities and help regulate body processes. They include vitamins and minerals.
Water: Though not a nutrient, water is essential for life and is sometimes considered a separate category due to its critical role.

Sources of Food Nutrients

Different food nutrients are obtained from various food sources:

Carbohydrates: Yam, rice, maize, cassava, bread, sugar, potatoes.
Proteins: Beans, groundnut, fish, meat, eggs, milk, chicken, soybeans.
Fats and Oils: Groundnut oil, palm oil, butter, margarine, avocado, nuts, fatty fish.
Vitamins: Fruits (orange, mango, pineapple), vegetables (spinach, carrot, ugu), liver, milk.
Minerals: Green leafy vegetables, milk, salt, fish, cereals.
Water: Drinking water, fruits, vegetables, soups.

Functions of Food Nutrients

Each class of food nutrient performs specific functions in the body:

Carbohydrates: Provide energy for daily activities and body functions.
Proteins: Build and repair body tissues, support growth, and produce enzymes and hormones.
Fats and Oils: Provide concentrated energy, protect organs, insulate the body, and transport fat-soluble vitamins.
Vitamins: Regulate body processes, protect against diseases, and aid in growth and development.
Minerals: Help build strong bones and teeth, regulate body fluids, and maintain proper nerve function.
Water: Transports nutrients, regulates body temperature, lubricates joints, and helps in waste removal.

Grouping Foods by Nutrients (Food Groups)

Foods are grouped based on the primary nutrients they provide and their main functions in the body:

Energy-Giving Foods (Carbohydrates and Fats): These provide the body with energy to work and stay warm. Examples include cereals, starchy roots, oils, and sugar.
Body-Building Foods (Proteins): These are essential for growth, repair of worn-out tissues, and building muscles. Examples include meat, fish, eggs, milk, and legumes.
Protective Foods (Vitamins and Minerals): These help the body fight diseases and maintain good health. Examples include fruits and vegetables.

Teaching Methods/Instructional Techniques

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

Instructional Procedures

Step 1: Introduction

Time: 5 minutes
Teaching Skill: Set Induction
Teacher’s Activity: The teacher greets the pupils and asks them to mention some of the foods they ate before coming to school. The teacher then asks what they think makes these foods important for the body.
Pupils’ Activity: Pupils respond by mentioning various food items and suggest reasons why food is important.
Learning Point: Pupils recall previous knowledge about food and are introduced to the concept of food importance.

Step 2: Classification of Food Nutrients

Time: 10 minutes
Teaching Skill: Explanation/Demonstration
Teacher’s Activity: The teacher displays charts showing different classes of food nutrients. The teacher defines food nutrients and explains their classification into macronutrients and micronutrients, giving examples of each.
Pupils’ Activity: Pupils observe the charts, listen attentively, and take notes on the definitions and classifications.
Learning Point: Pupils learn the definition and main classifications of food nutrients.

Step 3: Sources of Food Nutrients

Time: 10 minutes
Teaching Skill: Illustration/Discussion
Teacher’s Activity: The teacher uses the sample food items and charts to illustrate the various sources of each food nutrient (carbohydrates, proteins, fats, vitamins, minerals, water). The teacher encourages pupils to mention other examples they know.
Pupils’ Activity: Pupils identify the food items, contribute examples of sources, and discuss where different nutrients can be found.
Learning Point: Pupils identify common food sources for each nutrient group.

Step 4: Functions of Food Nutrients

Time: 7 minutes
Teaching Skill: Explanation/Questioning
Teacher’s Activity: The teacher explains the specific functions of each food nutrient in the body, relating them to the importance of food discussed earlier. The teacher asks questions to check understanding.
Pupils’ Activity: Pupils listen, ask questions for clarity, and state the functions of different nutrients.
Learning Point: Pupils understand the roles of different nutrients in maintaining health and body functions.

Step 5: Grouping Foods by Nutrients

Time: 5 minutes
Teaching Skill: Categorization/Application
Teacher’s Activity: The teacher guides pupils to group the sample food items and other foods they know into energy-giving, body-building, and protective food groups based on their primary nutrient content and functions.
Pupils’ Activity: Pupils actively participate in grouping the foods and explain their choices.
Learning Point: Pupils learn how to categorize foods based on their nutrient composition and functions.

Step 6: Evaluation/Review

Time: 5 minutes

Teaching Skill: Questioning/Assessment

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

Define food nutrients.
List three main classes of macronutrients.
Mention two sources of protein.
State two functions of vitamins in the body.

Pupils’ Activity: Pupils answer orally and in writing.

Learning Point: Pupils demonstrate understanding of the lesson.

Step 7: Conclusion

Time: 3 minutes
Teaching Skill: Summarization/Consolidation
Teacher’s Activity: The teacher summarizes the key points of the lesson, emphasizing the importance of consuming a variety of foods for a balanced diet. The teacher assigns homework: “List five foods you ate yesterday and classify them into energy-giving, body-building, or protective foods.”
Pupils’ Activity: Pupils listen to the summary and copy the homework.
Learning Point: Pupils consolidate their learning and apply it to their daily lives.

Lesson Keywords

Nutrients – Chemical substances in food essential for life and health.
Macronutrients – Nutrients needed in large amounts (carbohydrates, proteins, fats).
Micronutrients – Nutrients needed in small amounts (vitamins, minerals).
Carbohydrates – Energy-giving foods like yam, rice, bread.
Proteins – Body-building foods like beans, fish, eggs.
Fats – Concentrated energy sources like groundnut oil, butter.
Vitamins – Protective nutrients found in fruits and vegetables.
Minerals – Protective nutrients found in vegetables, milk, salt.
Food Groups – Categories of food based on their primary nutrients and functions.

Differentiation

For pupils who grasp concepts quickly, the teacher will encourage them to research specific deficiency diseases related to particular nutrients. For pupils who need more support, the teacher will provide simplified charts and additional examples, allowing them to work in pairs to identify food sources.

Note for teachers using this lesson plan

Teachers should ensure that the instructional materials, especially the food samples, are readily available and safe for classroom use. Encourage active participation and real-life examples to make the lesson relatable. Emphasize the importance of local food sources for a balanced diet.