36 ACMNA033 Fractions and decimals • Recognise and interpret common uses of halves, quarters and eighths of shapes and collections.

Halves and quartersHalves and quartersLab 2Lab 2 fractions

QuartersQuarters

Colouronequarterofeachshape.

Cuteachshapeintoquarters.Colouronequarter.

Quarters

Challenge!Paulbuysonehalfofeachpizza.Howmanypiecesineachhalf?

a b c d

37ACMNA033 Fractions and decimals • Recognise and interpret common uses of halves, quarters and eighths of shapes and collections.

1 Colourtomatchthelabel.

a b c

onehalf onequarter onehalf

d e f

onequarter onequarter onehalf

!2 !4

!4 !2

!2

!4

2 Colouronehalf(!2).

a b c

d e f

3 Colouronequarter(!4).

a b c d

e f g

!2=onehalf!4=onequarter

Halves and quartersHalves and quarters Fraction notation

38 ACMNA033 Fractions and decimals • Recognise and interpret common uses of halves, quarters and eighths of shapes and collections.

1 2

3 4

Divideintoequalhalves.

5 6

7 8

Drawadiagram

18animals.Halfarecats.

Howmanycats?

halfof8is

halfofis halfofis

halfofis halfofis

Nedhad12cards.Hegavehalfofthemaway.

Howmanyleft?

Mariaatehalfofthebiscuits.Thereare10left.

Howmanywerethere?

halfof10is

Halvesaretwoequalparts.

Half a collectionHalf a collection Equal parts of groups

39ACMNA033 Fractions and decimals • Recognise and interpret common uses of halves, quarters and eighths of shapes and collections.

Sharing a collectionSharing a collection

Challenge!Whatis: a!2 of8?b!4 of8?

conehalfof20? donequarterof20?

e!2 of40?f!4 of40?Canyouseeapattern?

2 Givehalftoeachchild.Circlethetwohalves.

a b

c d

e f

1 Sharefoodequally.Eachchildwillget:

bananascakesstrawberrieslollies

orange

!2 of6is !2 of10is

!2 of8is !2 ofis

!2 ofis!2 ofis

Equal parts of groups