Starter quiz
- Order these time intervals from shortest to longest.
- 1⇔one minute
- 2⇔quarter of an hour
- 3⇔half an hour
- 4⇔one hour
- How many minutes are there in one hour? There are ______ minutes in one hour.
- '60' ✓
- 10 + 35 = ______
- '45' ✓
- How many minutes are there in three quarters of an hour? There are ______ minutes in three quarters of an hour.
- '45' ✓
- 25 + 15 = ______
- '40' ✓
- 50 − 15 = ______
- '35' ✓
Exit quiz
- Match the time intervals.
- 15 minutes⇔quarter of an hour ✓
- 30 minutes⇔half an hour ✓
- 45 minutes⇔three quarters of an hour ✓
- Match the activity with a sensible estimate about how long it might take.
- Brushing teeth⇔3 minutes ✓
- Walk a mile⇔30 minutes ✓
- PE lesson⇔1 hour ✓
What time interval is being shown here?- 3 minutes
- 9 minutes
- 15 minutes ✓
- 30 minutes
-
- Pedro started swimming at half past 9 and it took him 20 minutes. What time did he finish?
- 10 minutes past 9
- 10 minutes to 10 ✓
- 10 o'clock
-
- Pedro finished swimming at quarter to 11 and it took him 20 minutes. What time did he start?
- 5 past 11
- 25 minutes past 10 ✓
- 25 minutes to 10
-
What time interval is being shown here? Select all of the options that apply.- 6 minutes
- Quarter of an hour
- 30 minutes ✓
- Half an hour ✓
-
Worksheet
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Presentation
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Video
Lesson Details
Key learning points
- Estimating and comparing can be used when considering how long different activities might take.
- Adding and subtracting skills might be used when working out intervals or durations.
Common misconception
Pupils need to be confident with the addition and subtraction of two digit numbers to other two digit numbers to be able to work out intervals or calculate using the intervals.
The idea of using tracing paper to create 15 minute, 30 minute and 45 minute time intervals is suggested and modelled. This can support the arithmetic in the lesson along with counting in 5s around the clock face.
Keywords
Interval - What is between two values or points. For example, the time between 9:00 and 9:15
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