TOPIC: SPEED AND GENERAL REVISION
A: TEACHING AND LEARNING MATERIALS
- Toy vehicles.
- Stopwatch or clock.
- Distance chart.
- Speed formula chart.
- Measuring tape.
- Chalkboard/whiteboard.
- 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 learnt how to measure distance and time and can perform simple multiplication and division calculations.
D: PERFORMANCE OBJECTIVES
By the end of the lesson, pupils should be able to:
- Explain speed.
- Explain distance and time.
- State the formula for speed.
- Calculate simple speed.
- Find distance or time in simple problems.
- Revise the major topics learnt during the second term.
E: CONTENT
Meaning of Speed
Speed tells us how fast or slow an object moves.
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Distance
Distance is how far an object travels.
It may be measured in:
- metres (m)
- kilometres (km)
Time
Time tells us how long a journey takes.
It may be measured in:
- seconds
- minutes
- hours
Formula for Speed
Speed = Distance ÷ Time
Example
A car travels 120 km in 2 hours.
Speed = 120 ÷ 2
\= 60 km/h
Finding Distance
Distance = Speed × Time
Example:
Speed = 50 km/h
Time = 3 hours
Distance = 50 × 3
\= 150 km
Finding Time
Time = Distance ÷ Speed
Example:
Distance = 100 km
Speed = 50 km/h
Time = 100 ÷ 50
\= 2 hours
General Revision
Pupils revise:
- Ratio and percentage.
- Percentage problems.
- Open sentences.
- Profit and loss.
- Simple interest.
- Commission and discount.
- Perimeter and circumference.
- Area of triangles.
- Volume.
- Capacity.
- Weight.
- Speed.
F: LESSON PRESENTATION
F1: Teachers’ Activities
- Uses examples of moving vehicles to introduce speed.
- Explains distance and time.
- Introduces the formula for speed.
- Demonstrates speed calculations.
- Shows how to find distance and time.
- Revises major second-term topics.
- Gives pupils revision exercises.
F2: Pupils’ Activities
- Explain speed in their own words.
- Identify units of distance and time.
- State the formula for speed.
- Calculate simple speed.
- Find distance and time.
- Answer revision questions.
- Correct their mistakes.
G: CONCLUSION
The teacher revises speed and the major Mathematics topics taught during the second term and corrects pupils where necessary.
Pupils are encouraged to practise calculations and prepare well for their examination.
H: EVALUATION GUIDE
Pupils should be able to answer the following questions:
- What is speed?
- State the formula for speed.
- A car travels 100 km in 2 hours. Find its speed.
- A bus travels at 40 km/h for 3 hours. Find the distance travelled.
- Find the area of a triangle with base 8 cm and height 6 cm.
- Change 3 L to millilitres.
- Change 5 kg to grammes.
- Find the volume of a cuboid measuring 4 cm × 3 cm × 2 cm.
- Find 10% of ₦5,000.
- Find the simple interest on ₦2,000 at 5% for 2 years.