Home > Stage 3 > Multiplicative relations > Greedy birds math - written
Select and apply strategies to solve problems involving multiplication and division with whole numbers
Select and use efficient strategies to multiply whole numbers of up to 4 digits by one- and 2-digit numbers
Select and apply mental and written strategies to multiply 2- and 3-digit numbers by 2-digit numbers
Use a multiplication algorithm with understanding (Reasons about relations)
Outdoor playing area
Bean bags labelled with numbers 1 – 20 (4 sets)
Hoops (1 hoop per group of 3 plus 2 for centre ‘nests’)
Chalk, whiteboard and marker or pencil and workbook
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.
Place 2 sets of numbered bean bags into the center circle. (bean bags are numbered 1 – 20.
Group students in pairs.
Students stand behind a hoop in group of 2.
On the whistle, one student from each nest will run to the centre 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 centre, 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 use their bean bags to create a multiplication number sentence (4-digit number multiplied by a 1- or 2-digit number).
Students record as a written algorithm and solve.
Once solved, bean bags return to the middle and play resumes on the whistle
Make the largest product.
Make the smallest product.
Make an odd product.
Make an even product.
Make a target product.