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Length, Mass and Capacity

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Length, Mass

and Capacity

Today we will be learning to:

- use standard metric and imperial units for measuring capacity

- convert from metric to imperial units

- plot a conversion graph.

Mental Activity

We are going metric measures.

You will have 5 seconds to answer each question

How many metres in 1.75km.

How many grams in 2.5kg

How many kg in 16 000g

How many km in 18000m

How many litres in 2500ml.

How many millilitres in 3.75litres.

What is the approximate mass of an apple

Main Activity

Today we are going to use metric and imperial units for measuring capacity.

1.2cm

12mm

4.4cm

44mm

13.6cm

136mm

9.7cm

97mm

10.8m

1080cm

3.42m

1.86m

342cm

186cm

1 inch = 2.5 centimetres

1 foot = 30 centimetres

3.3 feet = 1 metre

1 yard = 90 centimetres

1760 yards = 1 mile

1 mile = 1600 metres (1.6km)

Here are the equivalents. They are approximate.

1 inch = 2.5 centimetres

1 foot = 30 centimetres

3.3 feet = 1 metre

1 yard = 90 centimetres

1760 yards = 1 mile

1 mile = 1600 metres (1.6km)

How many millimetres are there in 4 inches?

1 inch = 2.5 centimetres

1 foot = 30 centimetres

3.3 feet = 1 metre

1 yard = 90 centimetres

1760 yards = 1 mile

1 mile = 1600 metres (1.6km)

How many centimetres are there in 2 feet?

Use your rulers and tape measures to measure objects around the classroom in both metric and imperial

What is capacity?

Does anyone know the units we use to measure capacity?

gallon

litre

centilitre

millilitre

half litre

pint

tablespoon

fluid ounce

Separate the units into imperial or metric.

litre

Imperial

Metric

Separate the units into imperial or metric.

pint

Imperial

Metric

litre

Separate the units into imperial or metric.

gallon

Imperial

Metric

pint

litre

Separate the units into imperial or metric.

centilitre

Imperial

Metric

pint

litre

gallon

Separate the units into imperial or metric.

millilitre

Imperial

Metric

pint

litre

centilitre

gallon

Separate the units into imperial or metric.

tablespoon

Imperial

Metric

pint

litre

centilitre

gallon

millilitre

Separate the units into imperial or metric.

fluid ounce

Imperial

Metric

pint

litre

centilitre

gallon

tablespoon

millilitre

Separate the units into imperial or metric.

half litre

Imperial

Metric

pint

litre

centilitre

gallon

tablespoon

millilitre

fluid ounce

How many millilitres are in one litre?

Imperial

Metric

pint

litre

centilitre

gallon

tablespoon

millilitre

fluid ounce

half litre

What is 500 millilitres in litres?

Imperial

Metric

pint

litre

centilitre

gallon

tablespoon

millilitre

fluid ounce

half litre

What is 250 millilitres in litres?

Imperial

Metric

pint

litre

centilitre

gallon

tablespoon

millilitre

fluid ounce

half litre

Do you know any relationships between the metric and imperial units?

Imperial

Metric

pint

litre

centilitre

gallon

tablespoon

millilitre

fluid ounce

half litre

1 litre = 1.75 pints

4.5 litres = 1 gallon

25 millilitres = 1 tablespoon

Here are the equivalents. They are approximate.

1 litre = 1.75 pints

4.5 litres = 1 gallon

25 millilitres = 1 tablespoon

How many pints are there in 4 litres?

1 litre = 1.75 pints

4.5 litres = 1 gallon

25 millilitres = 1 tablespoon

How many gallons are there in 27 litres?

1 litre = 1.75 pints

4.5 litres = 1 gallon

25 millilitres = 1 tablespoon

How many millilitres are there in8 tablespoons?

1 litre = 1.75 pints

4.5 litres = 1 gallon

25 millilitres = 1 tablespoon

Approx 5 litres = 8 pints = 1 gallon

Remember a litre and a quarter is about a pint and three quaters

1 litre = 1.75 pints

4.5 litres = 1 gallon

25 millilitres = 1 tablespoon

How many litres in 3 gallons

1 litre = 1.75 pints

4.5 litres = 1 gallon

25 millilitres = 1 tablespoon

What might the conversion graph look like?

Group Work

Work in pairs to draw a conversion graph for 1 gallon = 4.5 litres. Write six questions for your graph. Swap with another pair and find the answers to their questions.