Measurement of Length for Primary 3

Class: Primary Three
Term: First term
Subject: Basic Science and Technology
Curriculum Theme: Basic Science
Previous Lesson: Instruments
Topic: Measurement of Length
Content/Learning Area: What is Length?, Metric Units of Length, Professionals Who Measure length, Example of Measurement
Time Allocation: 40 minutes

Performance Objectives

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

• Cognitive Domain:

1. Explain the meaning of length.
2. Identify and mention various instruments for measuring length.
3. Identify the metric units of measuring length.
4. Mention professionals who deal with the measurement of length.

• psychomotor Domain:

1.Measure the length of objects around them using both olden and standard methods.

• Affective Domain:

1. Show interest in learning about measurement.

• Social Domain:

1. Work cooperatively with peers during activities.

reference Materials

• 9 – Years Basic Education Curriculum
• Abuja Educational Resource Centre Scheme of Work
• NAPPS National unified Scheme of Work
• Online Facts
• Relevant Textbooks

Instructional Materials

To deliver this lesson, the teacher will use the following materials:

• Rulers
• Tape measures
• Meter sticks
• Chart showing metric units
• Pictures of professionals who use measurement

Rationale for the Lesson

Understanding measurement of length is basic to many aspects of life, from everyday tasks to specialized professions. This lesson provides a foundation for future learning in mathematics and science.

Prerequisite/Previous Knowledge

The teacher will start by asking pupils what they understand by the word “length” and how they can estimate the length of objects using their hands or feet. This will lead into a discussion about the need for standard units of measurement.

Lesson Content

What is length?

Length refers to the distance between two points, indicating how long something is from one end to the othre. We measure length using tools like tape measures, rulers, and meter sticks. In the past, people used handspans, strides, feet, or other body parts to estimate length.

Metric Units of Length

Metric units of length are standardized units used for measuring distances and dimensions.
These include:

1. Millimeters (mm)
2. Centimeters (cm)
3. Meters (m)
4. Kilometers (km)

Each unit is used depending on the size of the object we are measuring.Here’s a table showing the units of length from shortest to longest:

| Unit | Equivalent |
| ————– | ————————— |
| millimetre (mm) | 10 millimetres = 1 decimetre |
| decimetre (dm) | 10 decimetres = 1 centimetre |
| centimetre (cm) | 10 centimetres = 1 metre |
| metre (m) | 1000 metres = 1 kilometre |
| kilometre (km) | 1000 metres = 1 kilometre |

Professionals Who Measure Length

Various professionals rely on accurate length measurements in their respective fields.
Examples are:

1. carpenters: They measure wood and spaces to build furniture and structures.
2. Engineers: They measure dimensions for designing and constructing buildings, bridges, and machines.
3. Scientists: They measure objects and distances in experiments and research.
4. Tailors: they measure body dimensions to create clothing.
5. Surveyors: They measure land and distances to create maps and establish boundaries.

Example of Measurement

Measurement involves determining the extent, quantity, or dimensions of an object or space.examples are:

1. Measuring the length of your classroom using a meter stick to determine its size in meters (m).
2. Using a tape measure to find the dimensions of a table in centimeters (cm).
3. Measuring the height of a door frame to ensure furniture can fit through it.
4. Determining the perimeter of a football field to mark the boundaries.
5. measuring the length of fabric needed to make a dress.

Teaching Methods

To deliver this lesson,‌ ⁤the teacher will⁤ adopt⁤ the following methods: Discussion,Presentation,Practical Activity

Instructional Procedures

To deliver this lesson,the teacher will adopt the following steps:

Step 1: Introduction (Set Induction)

Time: 5 minutes
Teaching Skill: Questioning
Teacher’s Activity: Asks pupils what they understand by length and how they can estimate length.
Pupils’ Activity: Respond to the teacher’s questions, sharing their prior knowledge.

Step 2: Explanation of Key Concepts

Time: 10 minutes
Teaching Skill: Explanation
teacher’s Activity: Explains the meaning of length and introduces metric units (mm, cm, m, km).
Pupils’ Activity: Listen attentively and ask clarifying questions.

Step 3: Demonstration/Guided Practice

Time: 10 minutes
Teaching Skill: Demonstration
Teacher’s Activity: Demonstrates how to measure length using a ruler and meter stick.
Pupils’ Activity: Observe the demonstration and participate in guided practice.

Step 4: Self-reliant Practice

Time: 10 minutes
Teaching Skill: Monitoring
Teacher’s Activity: Guides pupils as they measure the length of various objects in the classroom.
Pupils’ Activity: Measure objects independently, applying what they have learned.

Step 5: Note-Taking

Time: 2 minutes
Teaching Skill: note-taking
Teacher’s Activity: Guides pupils in taking notes on key concepts and definitions.
Pupils’ Activity: Write down notable information.

Step 6: Evaluation/Review

Time: 3 minutes
Teaching Skill: Questioning
Teacher’s Activity: Asks review questions to assess understanding.
Pupils’ Activity: Answer the review questions.

Objective-aligned checks:

1. Explain the meaning of length.
2. Identify and mention various instruments for measuring length.
3. Identify the metric units of measuring length.

Step 7: Conclusion

Time: 2 minutes
Teaching Skill: Summarizing
Teacher’s Activity: Summarizes the key concepts and assigns homework.
Pupils’ Activity: Listen to the summary and note the homework assignment.

Lesson Keywords

• Length – The distance between two points.
• Millimeter (mm) – A metric unit of length, the smallest unit commonly used.
• Centimeter (cm) – A metric unit of length, equal to 10 millimeters.
• meter (m) – A metric unit of length, equal to 100 centimeters.
• Kilometer (km) – A metric unit of length, equal to 1000 meters.
• Measurement – The process of determining the size, quantity, or extent of something.

Lesson Evaluation

To evaluate the learning, the teacher asks pupils to:

1. What is the meaning of length?
2. What are some tools used for measuring length?
3. What are the metric units of measuring length?
4. What are some professions that involve measuring length?
5. How can you measure the length of an object using both olden and standard methods?

Assignment/Homework

1. Measure the length of your bed and your reading table at home using a ruler or tape measure.
2. List three professionals who use measurement in their jobs.
3. Write down the metric units of measuring length from smallest to largest.

Differentiation

• For slower learners: Provide one-on-one assistance and use simpler examples.
• For advanced learners: Encourage them to explore different methods of measurement and solve more complex problems.
• For visual/auditory/kinesthetic learners: use visual aids, verbal explanations, and hands-on activities to cater to different learning styles.

Note for Teachers

Ensure to provide practical demonstrations and hands-on activities to help pupils understand the concept of length and measurement effectively. Encourage pupils to ask questions and participate actively in the lesson.