L.O- to use appropriate metric units for lengths and distances
S.C1) I know what the metric lengths are and can write them correctly.
2) I can choose the most appropriate metric length
KEY EXAMPLE
The metric units of length are mm, cm, m and km.
You
You
You
You
the
would probably measure
would probably measure
would probably measure
would probably measure
UK, we use the imperial
the length of a finger nail in mm.
the length of your exercise book in cm
the length of your bedroom in m
the distance between Birmingham and London in km (although in
unit of miles)
QUICK START – Match the unit of metric length with the abbreviation
Centimetre
m
Kilometre
mm
Millimetre
cm
Metre
km
STAR CHALLENGE: What is the most appropriate metric unit of
length?
1) The length of a pencil: ______
2) The height of a classroom: ______
3) The length of an ant: ______
4) The height of a person: ______
5) The distance from Paris to London: ______
6) The length of the river Nile: ______ 7) The length of a finger: ______
8) The width of a whiteboard: ______
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9) The width of a laptop: ______
MOON CHALLENGE: Complete the table by filling in 5 objects or
distances that can be measured with each unit.
mm
cm
m
km
SUN CHALLENGE: The metric units of length are mm, cm, m and km.
Make a list below of any other units of length that you know.
If possible, see if you can use the internet to find any conversions between
metric lengths and these other lengths (e.g. 1 inch = 2.5cm).
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