Heat and Temperature II – Units and Symbols of Temperature Scale (Primary 5)

Last Updated on July 15, 2020 by Alabi M. S.

BASIC TECHNOLOGY

BASIC SCIENCE AND TECHNOLOGY

THIRD TERM  

WEEK 8

PRIMARY 5

THEME – YOU AND ENERGY 

PREVIOUS LESSON – Heat and Temperature I – Meaning and Different (Primary 5)

TOPIC – UNITS AND SYMBOLS OF TEMPERATURE 

LEARNING AREA

1. Units and symbols of temperature scale

2. Relationship between degree Celsius and Degree Fahrenheit

3. Some uses of thermometer

PERFORMANCE OBJECTIVES 

By the end of the lesson, the pupils should have attained the following objectives (cognitive, affective and psychomotor) and should be able to –

1. identify and write the units and symbol of temperature scale.

2. relationship between degree Celsius and Degree Fahrenheit.

3. use the thermometer to measure the temperature of objects accurately.

ENTRY BEHAVIOUR

Changing in Weather – Hot (warm) or Cold (cool)

INSTRUCTIONAL MATERIALS

The teacher will teach the lesson with the aid of:

1. A chart showing different thermometers

2. A chart showing the units and symbols of temperature correctly.

3. Different thermometers

4. Flask of hot water.

5. Some ice water.

 

Relevant links:

Heat and Temperature I – Meaning and Different (Primary 5)

Meaning of Heat and Temperature I – ASEI PDSI METHOD (Primary 5)

Heat and Temperature II – Units and Symbols of Temperature – ASEI PDSI METHOD (Primary 5)

Third Term Scheme of Work and Plan Lesson Note for Basic Science and Technology Primary 4, Primary 5 and Primary 6 Links

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  

LESSON ONE – INTRODUCTION 

Heat is the cause, a rise in temperature is the effect. When a substance is hot, the temperature is high and when the substance is less hot (cold), the temperature is lower.

Temperature can be measured with a thermometer.

MEANING OF TEMPERATURE 

Temperature is the degree of hotness (warmness) or coldness (coolness) of the body – water, iron, food, etc. That’s, how hot (hot) or cold (cool) a thing (water, human body, etc.) is.

Or

Thermometer is an device used for measuring temperature of a body. For example, how hot or cold is water, food, iron, human body, etc.

UNITS AND SYMBOLS OF TEMPERATURE SCALE

DEGREE CELSIUS (°C)

Hint — °C to °F, Divide by 5, then multiply by 9, then add 32

 

Example 1

Convert 25° Celsius to Fahrenheit.

First, 25°/5 = 5

Then, 5 × 9 = 45

Then, 45 + 32 = 77° F

 

Example 2

Convert 30º Celsius to Fahrenheit.

First, 30ª/5 = 6

Then, 6 x 9 = 54

Therefore,

54 + 32 = 86º F

Pupil’s Activities

Convert

1. 20º Celsius

2. 15º Celsius

to Fahrenheit.

LESSON TWO – UNITS AND SYMBOLS OF TEMPERATURE SCALE

DEGREE FARENHEIGHT (°F)

Hint —°F to °C: Subtract 32, then multiply by 5, then divide by 9.

 

Example 1

Convert 77º Fahrenheit to degree Celsius.

First, 77º — 32 = 45

Then, 45 x 5 = 225

Therefore,

225/9 = 25º Celsius

 

Example 2

Convert 86º Fahrenheit to degree Celsius.

First, 86º —32 = 54

Then, 54 x 5 = 270

Therefore,

270/9 = 30º Celsius

Pupil’s Activities

Convert

1. 68º Fahrenheit

2. 59º Fahrenheit

to Celsius.

 

LESSON THREE – SOME USES OF THERMOMETER 

 

1. It is used to measure the outdoor temperature.

2. It is used to measure body temperature – the doctor.

3. It is used to measure body temperature when someone is ill to determine if the person has a fever.

4. It is used to measure the temperature of an experiment.

5. It is used to measure the temperature of a cold room.

 

 

PRESENTATION

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

1. To introduce the lesson, the teacher revises the previous lesson. Based on this, he/she asks the pupils some questions;

2. Provides the pupils with different types of thermometers.

3. Uses charts to guide the pupils to identify and name the units and symbols for temperature.

Pupil’s Activities – Identify the units and symbols of temperature.

4. Guides pupils to state the relationship Celsius and Fahrenheit.

Pupil’s Activities – Concert one unit to another.

5. Discusses the uses of thermometer.

Pupil’s Activities – Participate in the class discussion.

 

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 

Pupils to:

1. write the units and symbols of temperature

2. use thermometers to measure temperature accurately.