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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