Capacity, Comparison of Capacity of Containers for Primary 1

Class: Primary 1
Term: 2nd Term
Week: 8
Age: 6 years
Duration: 45 minutes
Subject: Mathematics
Curriculum Theme: Measurement
Previous Lesson: Capacity, Idea of Capacity as Way of Measuring Liquid.
Topic: Capacity
Subject Matter: Comparison of capacity of containers, Ordering of capacity of containers, Value of capacity, Simple addition and subtraction of capacity.

Specific Objectives

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

Cognitive Domain:

• Define capacity of a container.
• Identify the standard unit of capacity (Litre).
• Perform simple addition and subtraction of capacity involving whole numbers.

Affective Domain:

• Appreciate the importance of measuring capacity in daily life.
• Show interest in comparing and ordering different containers.

Psychomotor Domain:

• Compare the capacity of different containers using water or sand.
• Arrange containers in ascending and descending order of capacity.
• Demonstrate simple addition and subtraction of capacity.

Social Domain:

• Work cooperatively with peers to compare and order containers.
• Participate actively in classroom discussions about capacity.

Reference Materials

The following resources were used in planning this lesson:

• 9 Years Basic Education Curriculum for Primary 1 Mathematics
• State Unified Scheme of Work
• New General Mathematics for Primary Schools 1
• https://www.youtube.com/watch?v=s5Rz-93q9dI
• https://www.youtube.com/watch?v=Jm00G1c8g5g

Instructional Materials

The teacher will teach this lesson with the aid of:

• Different sizes of empty containers (bottles, cups, buckets, jugs)
• Water or sand
• Measuring cups
• Charts showing capacity comparisons and simple calculations

Rationale for the Lesson

Understanding capacity helps pupils to measure and compare liquids or granular substances in containers, which is an important skill for everyday tasks such as cooking, buying groceries, and understanding measurements used in household activities.

Prerequisite/Previous Knowledge

Pupils can identify different sizes of objects and can perform simple addition and subtraction of whole numbers.

Lesson Content/Board Summary

Capacity

What is Capacity?

Capacity is the amount of liquid or substance a container can hold. We use capacity to measure how much water, juice, or sand fits inside a bottle, cup, or bucket.

Comparing Capacity of Containers

To compare capacity, we look at which container holds more or less. A big container holds more, and a small container holds less.

The following are ways to compare containers:

• Fill one container and pour its content into another to see which is bigger or smaller.
• Visually observe and estimate which container looks like it can hold more.

Ordering Capacity of Containers

Ordering capacity means arranging containers from the one that holds the least to the one that holds the most, or from the one that holds the most to the one that holds the least.

• Ascending Order: From smallest capacity to largest capacity.
• Descending Order: From largest capacity to smallest capacity.

Units of Capacity

The standard unit for measuring capacity is the Litre (L).

• Smaller amounts can be measured in millilitres (mL), but for Primary 1, we focus on Litre.
• We can also use non-standard units like cups or spoons to compare, but Litre is standard.

Simple Addition and Subtraction of Capacity

We can add and subtract capacities just like we add and subtract numbers, but we must remember to include the unit (Litre).

Worked Examples:

Example 1: Addition

A jug has 9 L of water, and another jug has 8 L of water. How much water is there in total?

• Step 1: Identify the given capacities: 9 L and 8 L.
• Step 2: Add the numbers: 9 + 8 = 17.
• Step 3: Write the answer with the unit: 17 L.
• Answer: There is 17 L of water in total.

Example 2: Subtraction

A bucket has 15 L of juice. If 7 L of juice is used, how much juice is left?

• Step 1: Identify the total capacity and the amount used: 15 L and 7 L.
• Step 2: Subtract the amount used from the total: 15 – 7 = 8.
• Step 3: Write the answer with the unit: 8 L.
• Answer: There is 8 L of juice left.

Teaching Methods/Instructional Techniques

Discussion, Lecture, Demonstration, Question and Answer, Visual Aids

Instructional Procedures

Capacity

Step 1: Introduction

Time: 5 minutes
Teaching Skill: Set Induction
Teacher’s Activity: The teacher greets the pupils and asks them to name different containers they see around them (e.g., cups, bottles, buckets). The teacher then shows various empty containers and asks what they are used for.
Pupils’ Activity: Pupils greet the teacher, name different containers, and state their uses.
Learning Point: Pupils recall prior knowledge of containers and their uses, which links to the concept of capacity.

Step 2: Explanation of Capacity and Uses of Containers

Time: 5 minutes
Teaching Skill: Explanation/Demonstration
Teacher’s Activity: The teacher explains that capacity is how much liquid or substance a container can hold. The teacher uses two different-sized containers to demonstrate which one holds more.
Pupils’ Activity: Pupils listen attentively and observe the demonstration, identifying which container holds more.
Learning Point: Pupils understand the meaning of capacity and recognize that containers have different holding abilities.

Step 3: Comparing and Ordering Capacity

Time: 10 minutes
Teaching Skill: Demonstration/Practical Activity
Teacher’s Activity: The teacher provides groups of pupils with different containers, water/sand, and cups. The teacher guides them to fill and pour to compare which containers hold more or less. Then, the teacher asks pupils to arrange the containers from the one that holds the least to the one that holds the most.
Pupils’ Activity: Pupils actively participate in comparing the capacities of containers and arranging them in order.
Learning Point: Pupils develop practical skills in comparing and ordering containers by capacity.

Step 4: Units of Capacity

Time: 5 minutes
Teaching Skill: Explanation/Introduction
Teacher’s Activity: The teacher introduces the standard unit of capacity, the Litre (L), using a 1-Litre bottle as an example. The teacher explains that we use Litres to measure how much liquid something holds.
Pupils’ Activity: Pupils listen and identify the 1-Litre container, repeating the unit “Litre”.
Learning Point: Pupils learn about the standard unit of capacity, Litre.

Step 5: Simple Addition of Capacity

Time: 5 minutes
Teaching Skill: Problem Solving/Demonstration
Teacher’s Activity: The teacher writes simple addition problems involving Litres on the board (e.g., 5 L + 3 L = ?). The teacher demonstrates how to solve them, emphasizing adding the numbers and keeping the unit (L).
Pupils’ Activity: Pupils observe the examples, copy them into their notebooks, and solve similar problems as guided by the teacher.
Learning Point: Pupils learn to perform simple addition of capacities.

Step 6: Simple Subtraction of Capacity

Time: 5 minutes
Teaching Skill: Problem Solving/Demonstration
Teacher’s Activity: The teacher writes simple subtraction problems involving Litres on the board (e.g., 10 L – 4 L = ?). The teacher demonstrates how to solve them, emphasizing subtracting the numbers and keeping the unit (L).
Pupils’ Activity: Pupils observe the examples, copy them into their notebooks, and solve similar problems.
Learning Point: Pupils learn to perform simple subtraction of capacities.

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 is capacity?
2. Which container holds more: a cup or a bucket?
3. Arrange these containers from the one that holds the least to the one that holds the most: (Teacher shows 3 different sized containers).
4. What is the standard unit for measuring capacity?
5. Solve: 7 L + 6 L = ____ L
6. Solve: 12 L – 5 L = ____ L

Pupils’ Activity: Pupils answer orally and in writing.

Learning Point: Pupils demonstrate understanding of the lesson.

Step 8: Conclusion

Time: 5 minutes
Teaching Skill: Summarization
Teacher’s Activity: The teacher summarizes the lesson by reviewing the definition of capacity, how to compare and order containers, the unit of capacity (Litre), and how to perform simple addition and subtraction of capacities. The teacher gives homework.
Pupils’ Activity: Pupils listen to the summary and copy the assigned homework.
Learning Point: Pupils reinforce their understanding of the topic and prepare for independent practice.

Home Task: Solve two new exercises on Capacity. Show each step and check each answer.

Lesson Keywords

• Capacity – The amount a container can hold.
• Litre (L) – The standard unit for measuring capacity.
• Compare – To find out if something is bigger, smaller, more, or less than another.
• Order – To arrange things in a sequence, like from smallest to largest.
• Addition – Putting numbers together to find a total.
• Subtraction – Taking one number away from another to find the difference.

Differentiation

For pupils who are struggling, the teacher will provide more one-on-one guidance during practical activities and use simpler examples for calculations. For advanced learners, the teacher will encourage them to estimate capacities before actual measurement and provide slightly more complex word problems for addition and subtraction.

Note for teachers using this lesson plan

Ensure a variety of containers are available for hands-on activities. Emphasize the practical relevance of capacity in everyday life. Encourage pupils to use the correct unit (Litre) when performing calculations. Supervise group activities closely to ensure all pupils participate and understand the concepts.