Heavy pockets In a world with just pennies, your purse or pockets would be very heavy. Two-coin systems make life much easier... Which coins would you choose? Age 11 to 16 Exploring and noticing Working systematically Conjecturing and generalising Visualising and representing Reasoning, convincing and proving Being curious Being resourceful Being resilient Being collaborative Problem Problem In a world with just pennies, your purse or pockets would be very heavy. Two-coin systems make life much easier... Which coins would you choose?
