Money - fewest number of coins and total spent
I am trying to create an activity where students have to make up an amount using the fewest number of coins. I want the correct layer to display when they get the amount AND the fewest number of coins correct. Any other combination will bring up a Try again layer which they have two attempts at before being shown the Incorrect layer with the correct answer.
In my example question the correct answer is £3.60 and 4 coins.
When I click on £2, £1, 50p and 10p the correct layer shows which is great as the correct number of coins is 4 BUT the correct layer is also showing when I click £1 3 times, 50p and 10p which is 5 coins in total.
The correct layer is also showing sometimes when I click the Try again button!