Uses of the different types of human teeth for Primary 4

Class: Primary 4
Term: Second Term
Week: 4
Age: 9 years
Duration: 45 minutes
Subject: Basic Science and Technology
Curriculum Theme: Living and Non-Living Things
Focal competence: Describing the various categories of teeth, their functions and position
Key competencies/values: Communication; Creativity and Innovation
Skills:

• Drawing and labelling parts of the human teeth

Previous Lesson: Human Teeth, Types, Number and Positions
Topic: Human Body: The Teeth: Uses
Subject Matter: Uses/functions of the different types of teeth, drawing and labelling

Specific Objectives

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

Cognitive Domain

• Mention the uses of each type of teeth.

Psychomotor Domain

• Draw the main types of human teeth.
• Label the main types of human teeth correctly.

Reference Materials

The following resources were used in planning this lesson:

• 2025 Revised 9 Years Basic Education Curriculum
• Relevant State Unified Scheme of Work
• Macmillan Primary Science and Technology Book 4
• The HeadTeacher Scheme of work

Instructional Materials

The teacher will teach this lesson with the aid of:

• Mirror
• Pieces of meat
• Model of the mouth
• Chart showing types of teeth
• Soft bread
• Biscuits
• Drawing paper and pencils

Rationale for the Lesson

This lesson helps pupils understand the specific roles each type of tooth plays in chewing food, which is essential for proper digestion. It connects the structure of the teeth to their functions, promoting an appreciation for the human body and its systems. This knowledge also encourages good oral hygiene practices.

Prerequisite/Previous Knowledge

Pupils should have a basic understanding of the human body and that teeth are part of it. They should also know that teeth are important for eating.

Lesson Content/Board Summary

Human Body: The Teeth: Uses

Uses/Functions of the Different Types of Teeth

Human beings have different types of teeth, and each type has a special job to do when we eat. These teeth work together to break down food into smaller pieces, making it easier to swallow and digest.

1. Incisors: These are the flat, sharp teeth at the front of the mouth.
   • Use: They are used for cutting and biting food, just like a pair of scissors. For example, when you bite into an apple or a piece of bread.
2. Canines: These are the pointed teeth located next to the incisors.
   • Use: They are used for tearing food, especially tough foods like meat. Their sharp, pointed shape helps to grip and tear.
3. Premolars (Bicuspids): These teeth are behind the canines and have a flatter surface with ridges.
   • Use: They are used for crushing and grinding food into smaller pieces. They start the process of mashing food.
4. Molars: These are the largest teeth, located at the back of the mouth, with broad, flat surfaces.
   • Use: They are primarily used for heavy grinding and chewing food into a fine pulp before it is swallowed. They are like powerful grinders.

Drawing and Labelling Human Teeth

It is important to be able to draw and label the main types of human teeth to understand their positions and functions. When drawing, show the distinct shapes of each tooth type. When labelling, clearly point to each type.

1. Draw the upper and lower jaws, showing the different positions of the teeth.
2. Draw the distinct shapes of incisors (flat), canines (pointed), premolars (ridged), and molars (broad and flat).
3. Label each type of tooth clearly.

Teaching Methods/Instructional Techniques

Discussion, Demonstration, Guided Practice, Question and Answer, Explanation, Observation, Practical Activity

Instructional Procedures

Step 1: Introduction

Time: 5 minutes

Teaching Skill: Activating prior knowledge

Teacher’s Activity: The teacher greets the pupils and asks them to name some parts of the human body they know. The teacher then specifically asks about the teeth and what they are used for generally.

Pupils’ Activity: Pupils respond by naming body parts and stating that teeth are used for eating.

Learning Point: Importance of teeth

Step 2: Introduction to Types and General Uses

Time: 7 minutes

Teaching Skill: Explanation/Demonstration

Teacher’s Activity: The teacher uses the model of the mouth and the chart to show pupils the different types of teeth. The teacher explains that each type has a special use. The teacher also asks pupils to look in a mirror and identify their front teeth.

Pupils’ Activity: Pupils observe the model/chart, listen to the explanation, and look in the mirror to identify their front teeth.

Learning Point: Different teeth types

Step 3: Incisors and Their Uses

Time: 6 minutes

Teaching Skill: Demonstration/Discussion

Teacher’s Activity: The teacher points to the incisors on the chart/model and explains they are for cutting. The teacher demonstrates by biting a piece of soft bread with their incisors and asks pupils to try it (if safe and appropriate).

Pupils’ Activity: Pupils observe the demonstration, listen, and may try biting the bread with their incisors.

Learning Point: Incisors for cutting

Step 4: Canines and Their Uses

Time: 6 minutes

Teaching Skill: Demonstration/Discussion

Teacher’s Activity: The teacher points to the canines and explains they are for tearing. The teacher demonstrates by tearing a piece of cooked meat with their canines and explains how their pointed shape helps.

Pupils’ Activity: Pupils observe the demonstration and listen to the explanation of canine function.

Learning Point: Canines for tearing

Step 5: Premolars and Molars and Their Uses

Time: 7 minutes

Teaching Skill: Explanation/Practical Activity

Teacher’s Activity: The teacher points to the premolars and molars, explaining their broad, flat surfaces are for crushing and grinding. The teacher demonstrates by chewing a biscuit with their back teeth and asks pupils to feel their back teeth with their tongue.

Pupils’ Activity: Pupils observe the demonstration, listen, and feel their back teeth.

Learning Point: Premolars and molars for grinding

Step 6: Drawing and Labelling Teeth

Time: 5 minutes

Teaching Skill: Guided Practice

Teacher’s Activity: The teacher guides pupils to draw the main types of human teeth (incisors, canines, premolars, molars) in their notebooks or on drawing paper. The teacher then guides them to label each type correctly using the chart as a reference.

Pupils’ Activity: Pupils draw and label the different types of teeth under the teacher’s guidance.

Learning Point: Drawing and labelling teeth

Step 7: Evaluation/Review

Time: 5 minutes

Teaching Skill: Questioning/Assessment

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

1. What are incisors used for?
2. Which teeth are used for tearing food?
3. Name the teeth used for grinding food.
4. Draw and label any two types of human teeth.

Pupils’ Activity: Pupils answer orally and in writing.

Learning Point: Uses and types of teeth

Step 8: Note-Taking

Time: 4 minutes

Teaching Skill: Guided Writing

Teacher’s Activity: The teacher guides pupils to copy the essential Board Summary notes on the uses of different types of teeth and the drawing/labelling instructions into their notebooks.

Pupils’ Activity: Pupils copy the notes carefully into their notebooks.

Learning Point: Recording lesson information

Step 9: Conclusion

Time: 2 minutes

Teaching Skill: Summarisation

Teacher’s Activity: The teacher briefly reminds pupils that different teeth have different jobs and that taking care of their teeth is very important for eating and staying healthy. The teacher praises them for their participation.

Pupils’ Activity: Pupils listen attentively and acknowledge the importance of dental care.

Learning Point: Recap of teeth functions

Continuous Assessment/Further Study

Type: Homework

Instruction: Answer the following questions in your notebook.

1. Explain in your own words why we have different types of teeth.
2. Draw a simple diagram of the human jaw and label the four main types of teeth.
3. Give one example of a food you would use your incisors for and one for your molars.

Lesson Keywords

• Incisors – The sharp, front teeth used for cutting and biting food.
• Canines – The pointed teeth next to incisors, used for tearing food.
• Premolars – Teeth behind canines, used for crushing and grinding food.
• Molars – The large, flat teeth at the back, used for heavy grinding and chewing.
• Functions – The special jobs or purposes of something.

Differentiation

For weaker learners, provide pre-drawn outlines of the teeth for labelling and simpler food examples for demonstration. For faster learners, challenge them to research the number of each type of tooth in an adult mouth versus a child’s mouth, or to explain how different animals’ teeth are adapted for their diets.

Suggested Lesson Videos

For further understanding, search on YouTube for: types of human teeth and their uses primary school

Teacher Guide for Using This Lesson Plan

Before the lesson, ensure all instructional materials, especially the mouth model, chart, mirror, and food samples (bread, cooked meat, biscuits), are ready and easily accessible. Begin by reviewing the general function of teeth to connect with prior knowledge. During the lesson development, use the practical demonstrations with food to make the functions of each tooth type concrete and memorable. Encourage pupils to use their mirrors to observe their own teeth as you discuss each type. When guiding the drawing and labelling activity, move around the classroom to provide individual support and correct any misconceptions. Emphasise clear labelling. Allow pupils to copy the Board Summary notes after the main teaching and evaluation to reinforce learning. Remind pupils about the importance of dental hygiene at the conclusion of the lesson.