Measures

• Mathematics
• Upper Secondary (Key Stage 4)
• GCSE

FS Maths

Measure conversions & compound measures

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Bill is a builder. On Monday he made mortar mix. He used 24 kg of sand and 5 kg of cement. On Tuesday Bill will make the same type of mortar mix. He will use 36 kg of sand.

How much cement does he need to make the same type of mortar mix?

Sand : Cement

24 : 5

1 : 0.208

36 : 7.5

Sand : Cement

24 : 5

12 : 2.5

36 : 7.5

Lesson Aim

Today you will learn how to convert between metric measures.

  

You will also learn how to convert between metric and imperial measures using conversion factors & graphs.

You will learn how to calculate compound measures using formulae.

Lesson objectives

1. Convert between units of length, weight and capacity in metric systems.
2. Convert between metric measures & imperial measures using conversion factors.
3. Convert between measures using conversion graphs.
4. Use formulae to calculate compound measures.

When do we see or use measurements?

What units do we use in the metric system for…

Capacity

Weight

Length

cm

mm

m

km

mg

g

kg

cl

L

ml

Convert 350cm into m

1. 35m
2. 3500m
3. 3.5m
4. 0.35m

Convert 2350ml into litres

1. 235l
2. 2.35l
3. 23500l
4. 23.5l

Write down 3 things you learned in this lesson.

Have students enter three things they learned in this lesson. With this they can indicate their own learning efficiency of this lesson.

Write down 2 things you want to know more about.

Here, students enter two things they would like to know more about. This not only increases involvement, but also gives them more ownership.

Ask 1 question about something you haven't quite understood yet.

The students indicate here (in question form) with which part of the material they still have difficulty. For the teacher, this not only provides insight into the extent to which the students understand/master the material, but also a good starting point for the next lesson.