1. © Nuffield Foundation 2011 Nuffield Free-Standing Mathematics Activity Measure it!

2. © Nuffield Foundation 2011 What could you use to measure these? What units would you use? This activity is about estimating and measuring lengths.

3. © Nuffield Foundation 2011 0 1 2 345 6 7 8 cm 0 10 20 304050 60 70 80 mm 3.5 cm6.8 cm0.4 cm 4 mm 35 mm 68 mm

4. © Nuffield Foundation 2011 A = 15 mm 0 1 2 345 6 7 8 cm Write these measurements in centimetres and millimetres: DECFHGB A = 1.5 cm = 51 mm B = 5.1 cm = 44 mm C = 4.4 cm = 23 mm D = 2.3 cm = 36 mm E = 3.6 cm = 59 mm F = 5.9 cm = 76 mm G = 7.6 cm = 7 mm H = 0.7 cm

5. © Nuffield Foundation 2011 How do you measure the length of a pencil? One end of the pencil must be at 0. Read the length on the ruler at the other end of the pencil. Is this correct?

6. © Nuffield Foundation 2011 Measure it! At the end of the activity How many centimetres are there in 1 metre? How many centimetres are there in 5 metres? How many millimetres are there in 1 metre? How many millimetres are there in 2 metres? How long is your ruler? How many millimetres are there in 1.5 cm? What length in centimetres is the same as 24 mm? Roughly how wide is your little finger? Roughly how long is your foot? Roughly how wide is your armspan? How many millimetres are there in 1 centimetre?