Class: Senior Secondary School 1 (SS1, SS 1, SSS1, SSS 1)
Term: 2nd Term
Week: 3
Age: 15 years
Duration: 45 minutes
Subject: Health Education
Curriculum Theme: Health Education
Previous Lesson: Nutrition and Food Nutrients.
Topic: BALANCED/ADEQUATE DIET
Subject Matter: definition of balanced diet, definition of adequate diet, food groups in the locality, nutritional problems, planning a balanced adequate diet table

Specific Objectives

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

Cognitive Domain:

Define a balanced diet.
Define an adequate diet.
List at least five common food groups found in their locality.
Identify at least three nutritional problems.

Affective Domain:

Appreciate the importance of consuming a balanced and adequate diet.
Develop an interest in making healthy food choices daily.

Psychomotor Domain:

Plan a simple, balanced, and adequate diet table for a day.

Promote healthy eating habits within their families and communities.

Reference Materials

The following resources were used in planning this lesson:

9 Years Basic Education Curriculum for Health Education (Senior Secondary)
Lagos State Unified Scheme of Work for Senior Secondary Health Education
Health Education for Senior Secondary Schools, Book 1
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:

Posters showing different food groups
Charts illustrating balanced diet plates
Real foodstuffs (e.g., yam, rice, beans, fruits, vegetables)

Rationale for the Lesson

This lesson helps pupils understand what constitutes a healthy diet. It enables them to make informed choices about the foods they eat, promoting their overall well-being and preventing diet-related health issues.

Prerequisite/Previous Knowledge

Pupils have basic knowledge of different types of food and their general uses from previous lessons.

Lesson Content/Board Summary

BALANCED/ADEQUATE DIET

Definition of Balanced Diet

A balanced diet is a meal that contains all the essential nutrients (carbohydrates, proteins, fats, vitamins, minerals, and water) in the correct proportions needed by the body for growth, energy, and maintenance of health.

Definition of Adequate Diet

An adequate diet is a meal that provides enough of all essential nutrients and energy to meet an individual’s specific needs without being excessive. It considers factors like age, gender, activity level, and health status.

Food Groups in the Locality

Food groups are categories of foods that share similar nutritional properties.

The following are common food groups found in Nigeria:

Carbohydrates (Energy-giving foods): Yam, rice, garri, bread, plantain.
Proteins (Body-building foods): Beans, fish, meat, eggs, milk.
Fats and Oils (Energy-giving and protective foods): Groundnut oil, palm oil, butter, avocado.
Vitamins and Minerals (Protective foods): Fruits (oranges, mangoes, pineapples), vegetables (ugu, spinach, garden egg), leafy greens.
Water: Essential for all bodily functions.

Nutritional Problems

Nutritional problems arise from consuming a diet that is either lacking in essential nutrients or has an excess of certain nutrients.

The following are common nutritional problems:

Malnutrition: General term for poor nutrition, including undernutrition and overnutrition.
Undernutrition: Caused by insufficient intake of food or specific nutrients. Examples include:
- Kwashiorkor (protein deficiency)
- Marasmus (severe energy and protein deficiency)
- Anaemia (iron deficiency)
- Vitamin A deficiency (leading to night blindness)
Overnutrition: Caused by excessive intake of food, leading to obesity and related health issues like diabetes and heart disease.

Planning a Balanced Adequate Diet Table

Planning a balanced adequate diet involves selecting foods from all major food groups in appropriate quantities for each meal (breakfast, lunch, dinner) and snacks, considering an individual’s needs.

Steps for planning a balanced diet include:

Identify the individual’s age, gender, activity level, and health status.
Choose a variety of foods from each food group.
Ensure appropriate portion sizes.
Include plenty of fruits, vegetables, and whole grains.
Limit intake of highly processed foods, sugary drinks, and unhealthy fats.

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 asks pupils about their favourite foods and what they had for breakfast, linking their responses to the idea of healthy eating.
Pupils’ Activity: Pupils respond by mentioning their favourite foods and what they ate for breakfast.
Learning Point: Pupils link their daily food choices to the concept of diet.

Step 2: Presentation of Balanced Diet

Time: 7 minutes
Teaching Skill: Explanation/Definition
Teacher’s Activity: The teacher defines a balanced diet, explaining that it includes all essential nutrients in correct proportions for the body’s needs.
Pupils’ Activity: Pupils listen attentively, ask questions for clarity, and take notes.
Learning Point: Pupils understand the definition and components of a balanced diet.

Step 3: Presentation of Adequate Diet

Time: 5 minutes
Teaching Skill: Explanation/Differentiation
Teacher’s Activity: The teacher defines an adequate diet, highlighting how it differs from a balanced diet by considering individual needs like age, gender, and activity level.
Pupils’ Activity: Pupils listen and differentiate between a balanced and an adequate diet.
Learning Point: Pupils understand the definition and concept of an adequate diet.

Step 4: Food Groups in the Locality

Time: 8 minutes
Teaching Skill: Demonstration/Categorization
Teacher’s Activity: The teacher uses charts, posters, and real foodstuffs to discuss the major food groups (carbohydrates, proteins, fats/oils, vitamins/minerals, water) and provides local examples for each.
Pupils’ Activity: Pupils identify the foodstuffs, categorize them into their respective groups, and contribute local examples.
Learning Point: Pupils can identify and classify local foods into their respective groups.

Step 5: Nutritional Problems

Time: 7 minutes
Teaching Skill: Explanation/Discussion
Teacher’s Activity: The teacher explains common nutritional problems such as malnutrition (undernutrition like Kwashiorkor, Marasmus, Anaemia, Vitamin A deficiency, and overnutrition like obesity), discussing their causes and effects.
Pupils’ Activity: Pupils listen, ask questions, and contribute to the discussion on nutritional problems.
Learning Point: Pupils understand common nutritional problems, their causes, and effects.

Step 6: Planning a Balanced Adequate Diet Table

Time: 8 minutes
Teaching Skill: Guidance/Application
Teacher’s Activity: The teacher guides pupils in planning a simple, balanced, and adequate diet table for a day, considering breakfast, lunch, dinner, and snacks, using local food examples.
Pupils’ Activity: Pupils actively participate in planning, suggesting meals and portion sizes for the diet table.
Learning Point: Pupils can plan a simple balanced and adequate diet table for a day.

Step 7: Evaluation/Review

Time: 5 minutes

Teaching Skill: Questioning/Assessment

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

Define a balanced diet.
What is an adequate diet?
Mention three food groups and give two examples for each from your locality.
List two common nutritional problems and briefly explain one.
Suggest one balanced meal for lunch.

Pupils’ Activity: Pupils answer orally and in writing.

Learning Point: Pupils demonstrate understanding of the lesson.

Step 8: Conclusion

Time: 2 minutes
Teaching Skill: Summarizing
Teacher’s Activity: The teacher summarizes the key learning points of the lesson and assigns homework, which could be to plan a balanced diet table for their family for one day.
Pupils’ Activity: Pupils listen to the summary and note down the homework.
Learning Point: The lesson is reinforced, and pupils are prepared for further study and practical application.

Lesson Keywords

Balanced diet – A meal containing all essential nutrients in correct proportions.
Adequate diet – A meal providing enough nutrients and energy for individual needs.
Food groups – Categories of foods with similar nutritional properties.
Malnutrition – General term for poor nutrition, including undernutrition and overnutrition.
Undernutrition – Insufficient intake of food or specific nutrients.
Overnutrition – Excessive intake of food, leading to health problems.
Kwashiorkor – A nutritional problem caused by protein deficiency.
Marasmus – A severe nutritional problem caused by energy and protein deficiency.
Anaemia – A condition caused by iron deficiency.
Nutrients – Substances in food that are essential for growth, energy, and health.

Differentiation

For pupils who grasp concepts quickly, they can be challenged to research specific nutritional needs for different age groups or conditions. For pupils needing more support, the teacher will provide simplified examples and one-on-one guidance during the planning of the diet table.

Note for teachers using this lesson plan

Teachers should adapt the local food examples to fit the specific region or community where the lesson is being taught. Encourage practical demonstrations and pupil participation to make the lesson engaging and relatable to their daily lives.