Conservation (keabadian) is one of fundamental idea in learning of volume.If we rearrange a set of counters in different ways, we do not alter the number of the counter.

Conservation of liquid-If we empty the water from one container into another differently shape container, the volume of water is still remain.

Conservation in Capacity

Using descriptive language

• Capacity– Full and empty.

• Volume– Big, little, large, small, and tiny.

Volume and Capacity

• Volume This is the amount of space

something takes up. There can be liquid volume or solid volume.

• Capacity Only containers have capacity. The

capacity of a container is the maximum volume of liquid it can hold.

1. Language development : size, fit, too big, too small

2. Can be develop through making comparisons-Which one smaller or larger,

and begin to develop the volume concept.

3. Children don’t conserve volumeuntil they are much older

4.Playdough- Making models

- Using the same piece, make another model

5. Displacement activity:- What happened when an

object is dropped into it- Use language: same, more, different

Length Weight

Volume

Area Capacity Volume Descriptive

language

Big, little, large, small, and tiny

Describe size of containers

Sort out tiny buttons to fit in an egg cup

Put the large pebbles into a pile in the garden

Volume

Size, fit, too big, too small, same, more, different

Comparing two models to see which one is larger or smaller

Length Weight Capacity Area Volume Comparative

language

Volume – Measuring in Litres

The litre (l, l, L) is the standard unit of volume.

Measuring scale 1 Measuring scale 2

Activity 1- Measuring in litresMaterials :

some jars, large bottles, food cans, jugs, teapots and other containers.

Sort them into 3 groups.

(a)Those that you think will hold about 1 litre of water.

(b) Those that you think will hold less than 1 litre.

(c) Those that you think will hold more than 1 litre.

Results….

• Check whether you were right by pouring water from a 1-litre measuring jar into each container.

• Worksheet

Measuring in millilitres

The millilitre (ml, mL) is the unit commonly used in measuring the volume of small containers.

Measuring scale Reading scale

Activity 2 – Measuring in Millilitres

• A medicine spoon holds 5 millilitres (ml). Estimate first and then use a 5 ml spoon to measure the volume.

Continue….

• Try another container and estimate the volume of each container.

• Check for the actual capacity.• Worksheet 1

• Worksheet 2

Capacity - Comparison

• One to one comparison

• Many to one comparison

• Interactive activity

Capacity - Conversion

• 1 l (litre) = 1000 ml (millilitres)

l i t r e s ( l ) m i l l i l i t r e s (m l )

÷ 1000

x 1000

Teaching & Learning Activities

(a) Change litres to millilitres

1 l (litre) = 1000 ml (millilitres)

= 1000 ml1 litres

Addition Method

• Example :

2 litres = ? Millilitres

2 litres = 1 litre + 1 litre

= 1000 millilitres + 1000 millilitres

= 2000 millilitres

Multiplication Method

1 litre = 1000 millilitres

2 litres = ? Millilitres

2 litres = 2 x 1 litre

= 2 x 1000 millilitres

= 2000 millilitres

(b) Change Millilitres to Litres

(i) Addition method

Example :

2000 Millilitres = ? Litres

2000 millilitres = 1000 litres + 1000 litres

= 1 litre + 1 litre

= 2 litres

(ii) Division Method

Example :

1000 millilitres = 1 litre

2000 millilitres = ? litres

2000 millilitres = 2000 litres

1000

= 2 litres

• Worksheet

THANK YOU