<p>I have used this for the past 12 years and it is something my classes have always looked forward to each week.<br />
Very simply, the pupils start at Bronze and they try to complete the medal challenge within 5 minutes. I allow them to move onto the next challenge only after getting full marks!<br />
Simply keep a log of the scores in your markbook/spreadsheet.</p>
<p>This has got to be one of my favourite resources I have used consistently regularly and keeps so many different mathematical concepts at the fore.</p>