<h1><strong>INTRODUCTION TO SCIENCE </strong></h1> CONTENT <ol> <li>Definition of Science</li> <li>How to Study Science</li> <li>The Branches of Science</li> <li>Uses of Science</li> </ol>   <h2><strong>Definition of Science </strong></h2> Science is the systematic study of nature. Basic science is a subject that introduces sciences to mankind. <h2><strong>How to Study Science </strong></h2> Science is studied through the following ways:

<h1><strong>FAMILY HEALTH - SANITATION</strong></h1> CONTENT <ol> <li>The Meaning of Sanitation</li> <li>Types of Sanitation</li> <li>How to Carry Out Personal Cleanliness</li> <li>Advantages of Observing Personal Cleanliness</li> <li>Disadvantages of Not Observing Personal Cleanliness</li> <li>The Importance of Sanitation</li> </ol>   <h2><strong>The Meaning of Sanitation</strong></h2> Sanitation is the removal of all kinds of waste that could be considered unpleasant from our immediate environment, in order to keep ourselves and our environment clean and healthy. <h2><strong>Types of Sanitation</strong></h2> The types of sanitation are as follows: (i) <strong>Environmental Sanitation:</strong> This refers to the practice or ways of keeping our surrounding clean and healthy by removing all kinds of waste from our rooms, toilets, bathrooms, kitchens and surroundings such as markets, schools etc. (ii)<strong> Personal cleanliness:</strong> This is the keeping of one’s body and personal belongings neat, clean and tidy always. Personal cleanliness is important for health because it prevents very tiny organisms (micro-organisms) which can cause diseases.   <h2><strong>How to Carry Out Personal Cleanliness</strong></h2> We can carry out personal cleanliness by doing the following:

REFUSE AND SEWAGE</strong></h1> CONTENT <ol> <li>Meaning of Refuse and Sewage</li> <li>Methods of Refuse Disposal</li> <li>Cleaning Tools and Agents</li> </ol>   <h2><strong>Meaning of Refuse and Sewage</strong></h2> Refuse is a solid waste whether dry or wet which could cause land pollution e.g. nylon, paper, plastic, broken bottles, scraps, etc. Refuse wastes materials could be divided into 2 namely: biodegradable and non-biodegradable. Biodegradable materials are materials that can decompose or decay e.g. banana peels, dead leaves, dead animals, etc. Non-biodegradable things are materials that cannot be decomposed or decay e.g. metals, plastics, broken bottles, etc. Sewage is a liquid waste from the environment e.g. faeces, urine, wasted water from kitchens, bathrooms, etc. <img class="size-full wp-image-19606 aligncenter" src="https://classhall.com/wp-content/uploads/2018/06/refuse-and-sewage.jpg" alt="refuse and sewage" width="431" height="116" />   <h2><strong>Methods of Refuse Disposal</strong></h2> Refuse disposal methods include:

<h1><strong>FAMILY HEALTH - NUTRITION </strong></h1> CONTENT <ol> <li>The Meaning of Nutrition</li> <li>Meaning of Food</li> <li>Classes of Food</li> <li>Balanced Diet</li> </ol>   <h2><strong>The Meaning of Nutrition</strong></h2> Nutrition is the act of obtaining food by living things. It is one of the characteristics of living things. <h2><strong>Meaning of Food</strong></h2> What is food? Food is any substance that is taken to nourish the body and to meet physiological needs for growth, energy and to maintain all processes. <h2><strong>Classes of Food</strong></h2> 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. <img class="aligncenter wp-image-19608 size-full" src="https://classhall.com/wp-content/uploads/2018/06/classes-of-food.jpg" alt="Nutrition - classes of food" width="346" height="268" /> <h3><strong>Carbohydrates</strong></h3> These are energy giving foods e.g rice, yam, maize, cassava, wheat, bread, potato, etc. Excess intake of carbohydrate foods can lead to diseases such as diabetes, beriberi etc.