TOPIC: CAPACITY
A: TEACHING AND LEARNING MATERIALS
- Measuring jug.
- Bottles.
- Cups.
- Buckets.
- Containers of different sizes.
- Litre and millilitre charts.
- Pupils’ exercise books and pencils.
B: REFERENCE MATERIALS
- Scheme of work.
- Recommended Mathematics textbook for Primary 5.
- Online educational resources.
C: PREVIOUS KNOWLEDGE
The pupils have seen and used different containers for holding water, milk, oil and other liquids.
D: PERFORMANCE OBJECTIVES
By the end of the lesson, pupils should be able to:
- Explain capacity.
- Identify units used for measuring capacity.
- Convert litres to millilitres.
- Convert millilitres to litres.
- relate litres to cubic centimetres.
- Solve simple problems involving capacity.
E: CONTENT
Meaning of Capacity
Capacity is the amount of liquid a container can hold.
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Units of Capacity
Capacity is measured mainly in:
- Litre (L)
- Millilitre (mL)
Relationship Between Litres and Millilitres
1 litre = 1,000 millilitres
Examples:
2 L = 2 × 1,000
\= 2,000 mL
3,000 mL = 3 L
Litres and Cubic Centimetres
1 mL = 1 cm³
Therefore:
1 L = 1,000 cm³
Example
A bottle contains 2.5 L of water.
2.5 × 1,000 = 2,500 mL
F: LESSON PRESENTATION
F1: Teachers’ Activities
- Shows pupils different containers.
- Explains the meaning of capacity.
- Introduces litres and millilitres.
- Demonstrates conversion between units.
- Explains the relationship between mL and cm³.
- Gives practice questions.
F2: Pupils’ Activities
- Identify containers.
- Name units of capacity.
- Measure liquids.
- Convert litres to millilitres.
- Convert millilitres to litres.
- Solve simple problems.
G: CONCLUSION
The teacher revises capacity and reminds pupils that 1 litre = 1,000 millilitres.
H: EVALUATION GUIDE
Pupils should be able to answer the following questions:
- What is capacity?
- Name two units of capacity.
- How many millilitres make 1 litre?
- Change 4 L to millilitres.
- Change 5,000 mL to litres.
- How many cm³ are equal to 1 mL?
- Change 2.5 L to millilitres.