# Stage 2 – volume and capacity

## Strategy

Students can:

• use a variety of containers to measure capacity
• read a scale to determine capacity

## Activities to support the strategy

### Activity 1

1. Show students a range of containers with labels that hold different amounts of liquid.

Say:

• I have a container and I want to know what its capacity is. Capacity means how much it will hold.
• Capacity is measured in litres or millilitres.
• Each container has a different capacity. Look at the labels to find out how much each container can hold.
• Students record list of containers and the capacity of each.

2. Provide students with a list of cards with terms related to capacity

card card card card card
paint more than a litre liquid soap oil almost full
milk coffee petrol almost a litre nearly full
soft drinks ice cream water tea juice
about half a litre about a litre half a litre half full approximately

In groups, students sort the terms into two columns.

3. Shows students a clearly labelled measuring jug and explains the measuring scales used to determine capacity (for example, litre, 1 litre, and 2 litres).The teacher demonstrates how to measure capacity with the measuring jug by saying, If I pour liquid from this container into the measuring jug, I will know how much it will hold – its capacity! I think (estimate) it holds about (approximately, nearly, almost) 2 litres.

4. Estimating and measuring capacity

The teacher gives students a set of containers. Students estimate the capacity of each container and record their estimates in a table. After estimating the capacity of each container, students use the measuring jug to find the actual capacity of each container and record it.

• Students are given a variety of unmarked containers of various shapes and sizes. Students then select the container which they think will have a capacity of 1 litre. Students test their prediction by pouring 1 litre of water into the container and record the capacity as being more than, equal to or less than 1 litre.
• Students collect a variety of containers with a capacity which is marked and less than 1 litre. Students then estimate the number of times this container will have to be filled to equal 1 litre. Students check their estimate by filling and pouring into a 1 litre measuring container.
• View/print estimated and actual capacity worksheet (PDF 28.93KB)

### Activity 2

The teacher provides students with different pictures of measuring containers holding an amount of liquid. Each should have a measuring scale (up to three litres). Students interpret the scale and estimate how much liquid is in each container, using language such as about, half full, about one litre.

• Discuss the gradations on each container. How is the scale recorded, e.g. in 500 mL intervals, 100 mL intervals, 50 mL intervals. ## References

### Australian curriculum

ACMMG084 Use scaled instruments to measure and compare lengths, masses, capacities and; temperatures.

### NSW syllabus

MA2-11MG Measures, records, compares and estimates volumes and capacities using litres, millilitres and cubic centimetres.

## Teacher resources

Students mark 100 mL gradations on an empty plastic container by pouring water. They use their calibrated container to identify single or multiple objects which displace 100 mL.