Mathematics - Primary 4 - Capacity

Capacity

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Term: 3rd Term

WEEK 5: Capacity

Class: Primary 4

Age: 9 years

Duration: 40 minutes of 5 periods

Subject: Mathematics

Topic: Capacity

SPECIFIC OBJECTIVES:

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

  1. ) Understand the concept of capacity.
  2. ) Identify standard units of measuring liquid capacity (e.g., liters, milliliters).
  3. ) Convert between different units of capacity (e.g., liters to centiliters).
  4. ) Solve addition and subtraction problems related to capacity.
  5. ) Solve real-life problems involving capacity.

INSTRUCTIONAL TECHNIQUES:

  • Demonstration
  • Group activities
  • Hands-on practice
  • Real-life examples

INSTRUCTIONAL MATERIALS:

  • Various liquid containers (e.g., bottles, cups, jugs)
  • Measuring cups (with units labeled)
  • Worksheets with capacity-related problems
  • Visual aids (charts showing capacity conversions)

INSTRUCTIONAL PROCEDURES

PERIOD 1 and 2:

STEP

TEACHER’S ACTIVITY

PUPIL’S ACTIVITY

STEP 1 – INTRODUCTION

Introduces the concept of capacity and its use in everyday life (e.g., how we measure liquids like water, oil).

Pupils discuss everyday examples of measuring liquid capacity (e.g., cooking, drinks).

STEP 2 – EXPLANATION

Defines standard units of capacity: liters (L) and milliliters (mL). Explains the relationship between liters and milliliters.

Pupils take notes and practice identifying the correct units for different volumes.

STEP 3 – DEMONSTRATION

Demonstrates converting liters to milliliters using visual aids and measuring containers.

Pupils watch and then practice conversions in groups or individually.

STEP 4 – EXERCISES

Provides exercises for pupils to convert between liters and milliliters (e.g., 1 L = 1000 mL).

Pupils solve capacity conversion problems on their own and in pairs.

EVALUATION:

  • Convert 5 liters to milliliters.
  • Convert 300 milliliters to liters.
  • Convert 1.5 liters to milliliters.

CLASSWORK:

  • Convert 2 liters to milliliters.
  • Convert 750 milliliters to liters.

ASSIGNMENT:

  • Convert 4 liters to milliliters.
  • Convert 1200 milliliters to liters.

 

PERIOD 3 and 4:

STEP

TEACHER’S ACTIVITY

PUPIL’S ACTIVITY

STEP 1 – INTRODUCTION

Recaps previous lesson on capacity and conversions.

Pupils review the previous lesson and discuss what they remember.

STEP 2 – EXPLANATION

Teaches addition and subtraction of liquid capacity in liters and milliliters.

Pupils learn how to add and subtract liquid capacities with examples.

STEP 3 – DEMONSTRATION

Demonstrates how to add and subtract different volumes of liquids (e.g., 1.2 L + 0.5 L = 1.7 L).

Pupils practice addition and subtraction of volumes with the teacher’s guidance.

STEP 4 – EXERCISES

Provides capacity addition and subtraction problems.

Pupils work individually or in pairs to complete the exercises.

EVALUATION:

  • Solve: 3.5 L + 0.6 L = ?
  • Solve: 4 L - 1.25 L = ?
  • Solve: 1500 mL + 750 mL = ?

CLASSWORK:

  • Add: 1.2 L + 0.8 L.
  • Subtract: 2.5 L - 1.3 L.

ASSIGNMENT:

  • Add: 0.9 L + 1.7 L.
  • Subtract: 3.6 L - 2.1 L.

 

PERIOD 5:

STEP

TEACHER’S ACTIVITY

PUPIL’S ACTIVITY

STEP 1 – INTRODUCTION

Discusses how we use capacity in real-life situations (e.g., filling bottles, buying drinks).

Pupils reflect on their personal experiences with measuring liquids.

STEP 2 – EXPLANATION

Teaches how to solve real-life problems involving capacity (e.g., “How much water is in 3 bottles of 2 L each?”).

Pupils listen to examples and practice real-life problem-solving.

STEP 3 – DEMONSTRATION

Solves real-life capacity problems using examples from the classroom.

Pupils solve similar real-life problems in groups or individually.

STEP 4 – EXERCISES

Provides real-life capacity problems (e.g., filling a container with liquid, determining how much space is left).

Pupils work in pairs to solve practical capacity problems.

EVALUATION:

  • If a container has a capacity of 3 L and is filled with 1.5 L of water, how much more water can it hold?
  • If you have 3 bottles, each with 500 mL of liquid, how much liquid do you have in total?

CLASSWORK:

  • A jug holds 2 liters of water. If you pour out 1 liter, how much water is left in the jug?
  • If a bottle contains 750 mL of juice and another contains 1.2 L, how much juice do you have altogether?

ASSIGNMENT:

  • A container holds 3 liters of oil. If 1.2 liters are used, how much oil is left in the container?
  • Solve: A cup holds 250 mL of water. How much water is in 5 cups?

 

CONCLUSION:

  • Recap the importance of understanding capacity in daily life (e.g., measuring liquids for cooking, drinks, etc.).
  • Summarize the key concepts of capacity, including conversions, addition, and subtraction of liquid volumes.
  • Encourage pupils to practice using capacity conversions and real-life problems at home.

 

EVALUATION FOR THE WHOLE WEEK:

  • Oral questions on capacity conversions, addition, and subtraction.
  • Classwork and homework completion.
  • Real-life problem-solving discussions.

Group exercises on practical uses of capacity.