Term : First Term

Week: Week 4

Class : JSS 1

Previous lesson : The pupils have previous knowledge of  

Family Health: Refuse and Sewage

Topic :



  1. The Meaning of Nutrition
  2. Meaning of Food
  3. Classes of Food
  4. Balanced Diet

Behavioural objectives :

By the end of the lesson, the learners will  be able to

  • Define Nutrition
  • Say the sources of Nutrition
  • Explain the importance of good nutritious food
  • Define food
  • Write out the classes of food
  • Mention the types of food that make up each class of food


Instructional Materials :

  • Wall charts
  • Pictures
  • Related Online Video
  • Flash Cards

Methods of Teaching :

  • Class Discussion
  • Group Discussion
  • Asking Questions
  • Explanation
  • Role Modelling
  • Role Delegation


Reference Materials :

  • Scheme of Work
  • Online Information
  • Textbooks
  • Workbooks
  • 9 Year Basic Education Curriculum
  • Workbooks





The Meaning of Nutrition

Nutrition is the act of obtaining food by living things. It is one of the characteristics of living things.


What Are the Sources of Nutrition

Most nutrition are already available in the types of food that we eat . That is why we must take a meal that contained all the classes of food in the right proportion or quantity . A meal that contains all the classes of food in the right quantity or proportion is known as Balance Diet .

What is Food 

Food is any substance that is taken into the body to maintain and sustain growth . Food may be liquid or semi soluble . Good food items    nourish the body and help the body  to meet physiological needs for growth, energy and to maintain all processes.

Classes of Food

The food we eat can be grouped into following classes based on the nutrient derived from it. Nutrient is a group of chemical compounds found in food.

There are six classes of food, namely carbohydrates, proteins, fat and oil, minerals salt, vitamins and water.

Nutrition - classes of food


These are energy giving foods . They give the body the required energy for our day to day activities . Most carbohydrates are always white in colour although it is not all of them are white . Examples of carbohydrates are  rice, yam, maize, cassava, wheat, bread, potato, etc.

Excess intake of carbohydrate foods can lead to diseases such as diabetes, beriberi etc.

Nutrition - Classes of food carbohydrates - wheat grains

Wheat Grains


These are body building food concerned with the growth and repair of worn out parts of the body . Proteins can be found in animal and plant based diet . e.g meat, fish, eggs, beans, liver ,groundnut, milk, etc.

Lack of protein in the body can cause kwashiorkor.

Nutrition - Classes of food - fish as source of proteins

Fats and Oils

They are also energy giving foods which serve as insulator against changes in temperature e.g. palms oil, groundnut oil, butter, margarine, coconut oil, cashew nut etc.

Excess fats deposit in the body can cause high blood pressure and stroke


These are foods needed in small quantity by the body for normal body maintenance. Vitamins aid digestion and sound health. E.g. fruits, vegetable, milk, egg, liver and nuts. Vitamins are grouped into Vitamin A,B,C,D,E and K.

Lack of vitamins could cause various diseases such as Night blindness, scurvy, rickets etc.

Nutirition - Classes of food - vitamins - apples, pawpaw, pineapple

Mineral Salts

These are essential inorganic elements needed by the body in varying quantities for various functions such bone and teeth formation, and cellular activities. These minerals include iron, calcium, magnesium, Iodine, Sodium etc. Foods that give minerals are milk, eggs, salt, vegetables, bones,fruits etc.

Nutrition classes of food - mineral salts


Water is a natural liquid chemical taken by the body to aid food digestion and important for body tissues and fluids such as blood, saliva, urine and sweat.

Balanced Diet

A balanced diet is a meal that contains all the classes of foods that the body requires in the right proportion.

Nutirition - Classes of food - Balanced diet







The topic is presented step by step


Step 1:

The class teacher revises the previous topics


Step 2.

He introduces the new topic


Step 3:

The class teacher corrects the pupils when and where the needs arise .



  1. ­Define nutrition.
  2. List the classes of food.
  3. Define Nutrition
  4. Say four sources of Nutrition
  5. Explain the importance of good nutritious food
  6. Define food
  7. Write out six classes of food
  8. Mention three types of food that make up each class of food


The class teacher wraps up or conclude the lesson by giving out short note to summarize the topic that he or she has just taught.

The class teacher also goes round to make sure that the notes are well copied or well written by the pupils.

He or she does the necessary corrections when and where  the needs arise.