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Home > Stage 2 > Multiplicative relations > Doubling and halving
Suggested content:
Suggested content:
Use arrays to establish multiplication facts from multiples of 2 and 4, 5 and 10
Relate doubling to multiplication facts for multiples of 2
Recognise that doubling is multiplying by 2 and halving is dividing by 2 (Reasons about relations)
Equipment
Equipment
Outdoor playing area
Materials such as multibase arithmetic blocks, ice cream sticks.
6-sided dice
Spinner showing ‘double’ and ‘halve’
Something to write on/with
Activity set-up
Activity set-up
Provide each pair with a double/halve spinner.
How to play
How to play
Players in small groups or pairs double or halve 2-digit numbers with the aim of collecting the most sticks.
In pairs, students take turns to roll the dice to form a 2-digit number and spin the spinner to determine if the number has to be doubled or halved.
Students relay run to collect the number of ice cream sticks, or similar and return them to their hoop.
Play continues until the teacher blows the whistle, or times runs out.
Have teams arrange their collection. The team with the largest collection of sticks wins.
Variations
Variations
Play with smaller or larger numbers.
Play within a timeframe.
The team with the smallest collection of sticks wins.
Play with a larger dice
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