Subtraction stacks
Watch the video to learn how to play
(From J Bay-Williams and G Kling, 2019)
Transcript
Transcript coming soon.
Collect resources
You will need:
10 counters (or other items such as dried pasta, lego pieces) per player
2 dice (you could also use playing cards use the king as zero, or a number spinner zero to 6)
Paper to make your Subtraction stack game board
How to play
Each player places their 10 counters of their subtraction stack gameboard. More than one counter can be placed on each number.
Take turns by rolling the dice and finding the difference between the two numbers rolled.
If a counter is on the number, the player removes it from the gameboard.
If there are no counters to remove, miss a turn.
The winner is the player who removes all counters from their gameboard first.
Other ways to play
Extend the subtraction stack gameboard to 9 or 11 and use a 12 or 10-sided dice. Each player will need 20 counters or items to play.
Discuss/reflect
What was one of your strategies for working out the difference between the numbers rolled? Is the strategy the same or different to your opponent?
Will you place your stacks of counters differently next time you play? Why?