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Home > Stage 1 > Combining and separating quantities > Greedy bird maths
Suggested content:
Suggested content:
Use flexible strategies to solve addition and subtraction problems
Represent addition and subtraction using structured materials such as a bead string or similar model
Select and apply strategies using number bonds to solve addition and subtraction problems with one- and two-digit numbers by partitioning numbers using quantity value and bridging to 10 (Reasons about relations)
Equipment
Equipment
Bean bags labelled with numbers 1 – 20 (4 sets)
Hoops (1 hoop per group of 3 plus 2 for center ‘nests’)
Chalk, whiteboard and marker or pencil and workbook
Activity set-up
Activity set-up
Teacher sets up 2 games of greedy bird math for a class of 20 – 25 (same as rob the nest).
Evenly spread 5 hoops around a center hoop (see diagram).
Place 2 sets of numbered bean bags into the center circle. (bean bags are numbered 1 – 20.
Group students in pairs.
How to play
How to play
One player from each pair runs to the centre circle, collects a bean bag and runs it back to their nest. Partner repeats. Once all bean bags have been retrieved, players begin taking bean bags from other nests. The aim is to collect the most bean bags, before making an addition sentence with their collection.
One player from each pair runs to the centre circle, collects a bean bag and runs it back to their nest. Partner repeats. Once all bean bags have been retrieved, players begin taking bean bags from other nests. The aim is to collect the most bean bags, before making an addition sentence with their collection.
Students stand behind a hoop in group of 2.
On the whistle, one student from each nest will run to the center circle and collect one bean bag at a time, returning each one back to the nest without dropping or throwing it.
Once all bean bags have been retrieved from the center, players are then allowed to take bean bags from other nests.
Blow the whistle at a time when all nests have at least 2 bean bags each.
Once the whistle has been blown, students must freeze and then arrange their bean bags to create an addition number sentence (bean bags can be grouped to make 2digit numbers).
Students solve the addition number sentence using an efficient strategy.
Once solved, bean bags return to the middle and play resumes on the whistle.
Variations
Variations
Make the largest sum
Make the smallest sum
Make the smallest possible 3 digit number
Make the largest possible 4 digit number
Make a number sentence with an odd number as the answer
Make a number sentence with an even number as the answer
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