The Human Body: The Teeth and Types of Teeth Primary 4 (Basic 4) Third Term Week 11 Basic Science and Technology

THE HUMAN BODY: THE TEETH AND TYPES OF TEETH PRIMARY 4 (BASIC 4) THIRD TERM WEEK 11 BASIC SCIENCE AND TECHNOLOGY

BASIC SCIENCE AND TECHNOLOGY

THIRD TERM

WEEK 11

PRIMARY 4 (BASIC 4) 

THEME – THE HUMAN BODY 

PREVIOUS LESSON – The Human Body: The Mouth, Tongue and Lips and Their Uses Primary 4 (Basic 4) Third Term Week 10 Basic Science and Technology

TOPIC – THE TEETH 

LEARNING AREA

1. Introduction

2. Meaning and Types of Teeth

3. Functions of the Teeth

4. Importance of Teeth

5. Weekly Assessment: Test Questions and Answers/Assignment

6. Summary

LEARNING OBJECTIVES 

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

1. Identify teeth as part of the human body.

2. State the meaning of teeth.

3. Mention the types of teeth.

4. State the functions of each type of teeth.

5. Explain the importance of teeth.

ENTRY BEHAVIOUR

Pupils have previously learned about the mouth, tongue, and lips and their uses in eating, speaking, and digestion.

This lesson builds on that knowledge by explaining that teeth are also found in the mouth and they work with the tongue and lips to bite, cut, tear, and chew food for proper digestion.

INSTRUCTIONAL MATERIALS

The teacher will teach the lesson with the aid of:

1. Chart showing the human teeth

2. Model or picture of the mouth with teeth

3. Mirror

4. Blackboard and chalk / whiteboard and marker

METHOD OF TEACHING

Choose a suitable and appropriate methods for the lessons.

Note – Irrespective of choosing methods of teaching, always introduce an activities that will arouse pupil’s interest or lead them to the lessons. 

REFERENCE MATERIALS

1. Scheme of Work

2. 9 – Years Basic Education Curriculum

3. Course Book

4. All Relevant Material

5. Online Information

CONTENT OF THE LESSON

INTRODUCTION

When we eat food, we use our teeth to bite and chew it into smaller pieces before swallowing.

LESSON 1 – MEANING OF TEETH

Teeth are hard white structures found in the mouth used for biting and chewing food. They are arranged in rows on the upper and lower jaws of the mouth.

There are 32 adult teeth in total, 12 more than in the baby set. The remaining 4 emerge later than the others, generally between the ages of 17 and 2 1.

Types of Teeth

There are four main types of teeth:

• Incisors 8

• Canines 4

• Premolars 8

• Molars 12

Total – 32

LESSON 2 – FUNCTIONS OF EACH TYPE OF TEETH

1. Incisors

Incisors are the front teeth in the mouth. There are 8 of them, and they help in cutting and biting food for easy chewing and digestion.

Incisors are thin and sharp.

Functions:

• They cut food into small pieces.

• They help in biting food.

2. Canines

Canines are sharp teeth beside the incisors. There are 4 canines in the mouth, and they help in tearing and holding food for proper chewing and digestion.

They are sharp pointed teeth beside the incisors.

Functions:

• They tear food.

• They help in holding and cutting tough food.

3. Premolars

Premolars are teeth located between the canines and molars. There are 8 premolars, and they help in crushing and grinding food for proper digestion.

Functions:

• The crush and grind food.

• They help in chewing food.

4. Molars

Molars are large back teeth. There are 12 molars in the mouth, and they help in grinding food into fine particles for easy digestion.

Functions:

• They grind food into fine particles.

• They help in chewing food properly.

LESSON 3 – IMPORTANCE OF TEETH

1. They help in biting and chewing food.

2. They help in proper digestion of food.

3. They help in clear speech.

4. They give shape to the face.

5. They help maintain good health.

WEEKLY ASSESSMENT: TEST QUESTIONS AND ANSWERS/ASSIGNMENT

A. Answer the Questions

1. What are teeth?

2. Mention the four types of teeth.

3. How many incisors do we have?

4. State two functions of canines.

5. What are molars used for?

B. Fill in the Blanks

6. The teeth used for cutting food are called ______.

7. There are ______ canines in the human mouth.

8. Premolars are used for ______ and grinding food.

9. Molars are found at the ______ of the mouth.

10. Teeth help in ______ food for digestion.

C. True or False

11. Incisors are used for tearing food. ______

12. Canines are sharp teeth. ______

13. Molars help in grinding food. ______

14. There are 8 premolars in the mouth. ______

15. Teeth are not important for digestion. ______

D. Matching

Match the teeth with their function:

Incisors → A. Grinding food

Canines → B. Cutting food

Premolars → C. Tearing food

Molars → D. Help in digestion

Teeth → E. Crushing food

ANSWER KEYS

1. Teeth are hard white structures in the mouth used for biting and chewing food.

2. Incisors, canines, premolars, molars.

3. 8 incisors

4. Tearing food, holding food (any two).

5. Grinding food

6. incisors

7. 4

8. crushing

9. back

10. chewing

11. False

12. True

13. True

14. True

15. False

16. B. Cutting food

17. C. Tearing food

18. E. Crushing food

19. A. Grinding food

20. D. Help in digestion

SUMMARY

In this lesson, pupils learned that teeth are hard structures found in the mouth used for biting, cutting, tearing, and chewing food.

They also learned the four types of teeth, their numbers, and functions:

• Incisors (8): Used for cutting and biting food.

• Canines (4): Used for tearing and holding food.

• Premolars (8): Used for crushing and grinding food.

• Molars (12): Used for grinding food into fine particles.

Pupils further understood that each type of tooth has a special function that helps in proper chewing and digestion of food.

Overall, the lesson helps pupils appreciate the importance of teeth in eating, speaking, and maintaining good health.

PRESENTATION

To deliver the lesson, the teacher adopts the following steps:

1. The teacher shows a chart or model of the human mouth with teeth.

Pupils’ Activities: The pupils observe and identify the teeth.

2. The teacher asks pupils to open their mouths and observe their teeth in a mirror.

Pupils’ Activities: The pupils observe and describe what they see.

3. The teacher introduces the topic: The Teeth and Types of Teeth.

Pupils’ Activities: The pupils repeat the topic.

4. The teacher explains the meaning of teeth as hard structures in the mouth used for biting and chewing food.

Pupils’ Activities: The pupils listen attentively.

5. The teacher identifies the four types of teeth: incisors, canines, premolars, and molars.

Pupils’ Activities: The pupils mention the types after the teacher.

6. The teacher states the number and functions of each type of teeth.

Pupils’ Activities: The pupils copy and respond to questions.

7. The teacher guides pupils to point out the different types of teeth on the chart.

Pupils’ Activities: The pupils participate actively.

8. The teacher explains the importance of teeth in biting, chewing, and digestion.

Pupils’ Activities: The pupils listen and ask questions.

9. The teacher demonstrates how teeth help in chewing using examples.

Pupils’ Activities: The pupils observe and practice.

10. The teacher summarizes the lesson by revising types, number, and functions of teeth.

Pupils’ Activities: The pupils answer oral questions.

CONCLUSION

To conclude the lesson for the week, the teacher revises the entire lesson and links it to the following week’s lesson.

NEXT LESSON

 

LESSON EVALUATION 

Teacher asks pupils,

1. What are teeth?

2. Mention the four types of teeth.

3. What are incisors used for?

4. What is the function of canines?

5. Why are teeth important?