Starter quiz
- Which of the following are metric measures of speed?
- N/m
- mph
- m/s ✓
- kg/m
- km/h ✓
-
- A car is travelling at an average speed of 90 km/h. How many kilometres will be travelled in 1 minute?
- '1.5 km' ✓
- A car travels 1.5 km in 1 minute. How far will it travel in 1 second?
- '0.025 km' ✓
- Convert 64.8 km/h into m/s.
- '18 m/s' ✓
Calculate the speed in km/h for the last part of the journey shown by this graph.- '30 km/h' ✓
- A lion's top speed is 22 m/s. Convert this speed into km/h.
- '79.2 km/h' ✓
Exit quiz
- Which of the following is an imperial measure of speed?
- m/s
- g/cm
- mph ✓
- km/h
- N/cm
-
- Which of the following are metric units of measure?
- kilograms ✓
- feet
- metres ✓
- acres
- kilowatts ✓
-
- Match the following.
- 0.85 kg⇔850 g ✓
- 85 000 m⇔85 km ✓
- 8.5 cm⇔85 mm ✓
- 0.0085 km⇔8.5 m ✓
- 85 g⇔0.085 kg ✓
- 850 mm⇔85 cm ✓
- A kilo of Pedro panda’s bamboo when measured in pounds is 2.2. Use this to convert 33 pounds into kilograms.
- '15 kg' ✓
- Convert 40 mph into km/h.
- '64 km/h' ✓
- Convert 96 km/h into mph.
- '60 mph' ✓
Worksheet
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Presentation
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Video
Lesson Details
Key learning points
- Sometimes speed is measured in different units.
- Approximately 17 countries (roughly 9%) use mph.
- When travelling abroad, it is useful to convert speed limits to help judge the speed of the road.
Common misconception
E.g 4.5 hours is 4 hours and 50 minutes
Encouraging pupils to use ratio tables to represent proportional relationships using minutes allows them to appreciate the multiplier of 60 when converting hours to minutes, or minutes to seconds.
Keywords
Metric - Metric units are based around the standard units of metre, gram and litre.
Imperial - Imperial is a system of units for measuring, which was created in the early 1800s during the British Empire.
Speed - Speed is the rate at which something is moving. It is measured as the distance travelled per unit of time.
Direct proportion - Two variables are in direct proportion if they have a constant multiplicative relationship.
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