Introduction:
Be aware that students working at a C level are only expected to work out whether they have ‘enough’ money rather than calculate the change. A level students are expected to work out how to calculate change. Complete Blast activities B1-B4 before beginning this journal problem .
Misconceptions to watch out for:
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You will need: Having photocopies of money or play money would be useful for students.
Leading questions:
- How could you work out if you have enough money?
- What amount of money is close to $24.75?
- Start with a $20 note. “Do I have enough money? How did you know? What else should I pick up?”
- Pick up the dollar coin and the $20 note. “Do I have enough money? How did you know? What else should I pick up?”