Mathematics
Intermediate
50 mins
Teacher/Student led
+65 XP
What you need:
IWB/Projector/Large Screen

Units of Time and How They Relate

Explore how seconds, minutes, hours, days and weeks nest inside one another. Use times facts to rename units of time and understand the relationships that link them.

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    1 - Getting Started ~4 mins

    Illustration for Getting StartedHands up: how many minutes do you think fit inside one hour? And how many hours do you think fill a whole day?

    Now the tricky one: could we count a whole week just by counting days?

    2 - Watch and Notice ~7 mins

    The interactive shows three clock snapshots, one at a time. Before each one appears, put a hand up with your guess for the missing number. Then look at the hands and notice that one full lap has become the next unit of time.

    3 - Try It Together ~10 mins

    Today we work these out together on the board:

    • one full turn of the minute hand, which is one hour
    • a half hour, then a quarter hour, how many minutes is each?
    • how many minutes are in two hours
    Key point

    Say the times fact aloud each time before we check it.

    How the units nest on the clock

    4 - Write the Facts in Your Copy ~3 mins

    COPYBOOK MOMENT

    In your maths copy, complete these in full sentences:

    • 1 minute = ___ seconds
    • 1 hour = ___ minutes
    • 1 day = ___ hours
    • 1 week = ___ days
    • 4 weeks = ___ days

    Read each sentence back to yourself when it is filled in.

    5 - Class Challenge ~8 mins

    Today we work through these renaming problems together on the board, using your units-of-time reference strip:

    • How many minutes are in 4 hours?
    • How many hours are in 3 days?
    • How many days are in 6 weeks?
    • Stretch: how many seconds are in 5 minutes?
    How to tackle each one

    For each one, find the two units on your strip, name the times fact, then work it out.

    Hands-on Task

    Pupil practice
    Module 6 · Time and Money Shape & Space
    Lesson 68 · Units of Time and How They Relate
    Download Activity Book page (PDF)
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