Human Body (The Mouth), Drug Education, And Search Programming Basic 4 Basic Science Lesson Note

HUMAN BODY: THE MOUTH

Class: Primary 4
Duration: 30 minutes
Subject: Basic Science

Learning Objectives

By the end of this lesson, pupils will be able to:

• Identify parts of the mouth
• Explain the functions of the tongue and lips
• Describe how to care for the mouth

What is the Mouth?

The mouth is the opening in our face that we use for eating, drinking, speaking, and breathing. It is the first part of our digestive system.

Parts of the Mouth

1. The Tongue

What it is: A soft, pink muscle inside the mouth

Functions of the Tongue:

• Helps us taste food – has taste buds that detect sweet, sour, bitter, and salty
• Helps us speak – moves to make different sounds and words
• Helps us eat – pushes food around while chewing
• Helps us swallow – pushes food to the back of mouth
• Helps clean mouth – removes food particles from teeth

Parts of the Tongue:

• Tip – front part, very sensitive
• Middle – main body of tongue
• Root – back part attached to throat
• Taste buds – tiny bumps that help us taste

2. The Lips

What they are: Soft, fleshy parts that cover the opening of the mouth

Functions of the Lips:

• Help us speak – shape sounds and words
• Help us eat – keep food in mouth while chewing
• Help us drink – form seal around cups and straws
• Show emotions – smile when happy, frown when sad
• Protect mouth – keep dust and germs out
• Help us kiss and show affection

Parts of the Lips:

• Upper lip – top lip
• Lower lip – bottom lip
• Corners – where lips meet on sides

How the Tongue and Lips Work Together

• Speaking: Tongue and lips move together to make words
• Eating: Lips keep food in while tongue moves it around
• Drinking: Lips seal around cup while tongue helps swallow
• Expressions: Both help show how we feel

Care of the Mouth, Tongue, and Lips

Daily Care

• Brush teeth twice daily
• Clean tongue gently with toothbrush
• Rinse mouth with clean water after eating
• Keep lips moist – drink water, use lip balm if needed

What to Avoid

• Don’t bite your tongue or lips
• Don’t put dirty things in mouth
• Don’t eat very hot food that can burn
• Don’t use rough things to clean tongue

Signs of Healthy Mouth

• Pink tongue and lips
• No pain or sores
• Fresh breath
• Able to taste food properly

Simple Activity

Look in a mirror and identify your tongue and lips. Try saying “hello” and watch how they move.

Evaluation

1. Name two parts of the mouth we studied
2. What are three functions of the tongue?
3. How do lips help us speak?
4. How should we care for our mouth daily?

DRUG EDUCATION

Class: Primary 4
Duration: 30 minutes
Subject: Health Education

Learning Objectives

By the end of this lesson, pupils will be able to:

• Understand what drugs are
• Know the consequences of drug misuse
• Identify ways drugs can be taken
• Recognize alcohol and tobacco as harmful substances

What are Drugs?

Drugs are substances that can change how our body works. Some drugs are medicines that help sick people get better, but some drugs are harmful and dangerous.

Drug Uses and Their Consequences

Good Use of Drugs (Medicines)

When used properly:

• Help cure diseases
• Reduce pain and fever
• Help people feel better
• Must be given by doctors or parents

Bad Use of Drugs (Drug Abuse)

When used wrongly:

• Can damage the brain
• Can hurt the heart and lungs
• Can make people very sick
• Can cause death
• Can make people do bad things

Ways of Taking Drugs

1. Through the Mouth

• Swallowing pills or tablets
• Drinking liquid medicine
• Safe when: Given by doctor or parent
• Dangerous when: Taking unknown drugs

2. Rubbing on Skin

• Applying creams or ointments
• Using medicated patches
• Safe when: Using proper medicine for skin problems
• Dangerous when: Using unknown substances

3. Injection

• Using needles to put medicine in body
• Only doctors and nurses should do this
• Very dangerous when done by untrained people
• Can cause serious infections

4. Inhaling (Breathing In)

• Breathing in medicine through nose or mouth
• Used for asthma treatment
• Very dangerous when sniffing harmful substances
• Can damage lungs and brain

Alcohol and Tobacco

What is Alcohol?

Alcohol is a liquid that can make people drunk and harm their body. It is found in some drinks that adults sometimes consume.

How alcohol harms the body:

• Damages the liver
• Affects the brain
• Makes people do dangerous things
• Can cause accidents
• Makes people sick

Types of Alcoholic Drinks

• Beer – contains alcohol, looks like soft drink but harmful
• Wine – made from grapes, contains alcohol
• Spirits – very strong alcoholic drinks
• Local drinks – palm wine, burukutu (harmful to children)

What is Tobacco?

Tobacco is a plant that people smoke in cigarettes. It is very harmful to health.

How tobacco harms the body:

• Damages lungs
• Causes cancer
• Makes breathing difficult
• Stains teeth yellow
• Causes bad breath

Important Safety Rules

• Never take any drug without adult permission
• Only take medicine given by parents, doctors, or teachers
• Stay away from alcohol and tobacco
• Tell an adult if someone offers you drugs
• Don’t accept drinks or substances from strangers

What to Do if Someone Offers You Drugs

1. Say “NO” firmly
2. Walk away quickly
3. Tell a trusted adult immediately
4. Don’t be afraid to report

Simple Activity

Practice saying “NO” loudly and clearly when offered something you shouldn’t take.

Evaluation

1. Name two ways drugs can be taken
2. Why should children not drink alcohol?
3. What should you do if someone offers you drugs?
4. Who should give you medicine when you’re sick?

SEARCH PROGRAMMING: THE 3S OF SEARCH

Class: Primary 4
Duration: 30 minutes
Subject: Computer Studies

Learning Objectives

By the end of this lesson, pupils will be able to:

• Understand what search programming means
• Identify the 3S of search
• Apply the 3S method when searching

What is Search Programming?

Search programming is the process of finding information on a computer or the internet. It means knowing how to look for things we want to find quickly and easily.

The 3S of Search

1. SEARCH

What it means: Looking for information

How to do it:

• Type what you want to find in the search box
• Use simple, clear words
• Think about what you really need
• Use keywords (important words)

Examples:

• If you want to know about lions, type “lions”
• If you want games for children, type “children games”
• If you want to learn math, type “math for kids”

2. SELECT

What it means: Choosing the best results

How to do it:

• Look at the search results carefully
• Read the titles and descriptions
• Choose results that match what you need
• Pick websites that look safe and helpful

What to look for:

• Results that match your topic
• Websites made for children (if you’re a child)
• Information that looks correct
• Safe websites (ask adults to help)

3. SHARE

What it means: Using and sharing the information you found

How to do it:

• Use the information for your project or homework
• Tell others about what you learned
• Share good websites with friends
• Always give credit to where you found information

Ways to share:

• Tell your classmates
• Show your teacher
• Use in school projects
• Help others find good information

Example of Using the 3S Method

Scenario: You want to learn about butterflies for a school project

1. SEARCH: Type “butterflies for kids” in search box
2. SELECT: Choose a website about butterfly facts for children
3. SHARE: Use the information in your project and tell classmates

Important Search Tips

• Use simple words – don’t make searches too complicated
• Be specific – the clearer your search, the better results
• Ask for help – let adults help you search safely
• Check information – make sure what you find is true

Search Safety Rules

• Always search with an adult nearby
• Don’t click on suspicious links
• Don’t share personal information online
• Tell adults if you see something inappropriate

Simple Activity

Practice the 3S method: Search for “animals in Nigeria,” select one good result, and share one fact you learned.

Evaluation

1. What does search programming mean?
2. What are the 3S of search?
3. What should you do after finding information?
4. Why is it important to select good results?