Unit 5: Using units of measurement

Length, area, capacity, mass, time and the calendar.

• 5.1 Length and area – How long? How much surface?
• 5.2 Metres and centimetres – Standard units mean everyone gets the same answer.
• 5.3 Capacity: litres – How much does a bottle hold?
• 5.4 Mass: kilograms – How heavy is a bag of rice?
• 5.5 Telling the time – Quarter past, half past, quarter to.
• 5.6 Measuring time – How long does a journey take?
• 5.7 Months and seasons – Bangladesh has six seasons!
• 5.8 Calendars – Find dates and count days.
• 5.9 Perimeter – How far is it all the way round?
• 5.10 Reading scales and thermometers – Read the marks between the numbers.