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Button-Up Some More
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Button-Up Some More

7 to 11
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How many ways can you find to do up all four buttons on my coat? How about if I had five buttons? Six ...?

A rolled up old-fashioned treasure map.
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Treasure Hunt

7 to 14
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Can you find a reliable strategy for choosing coordinates that will locate the treasure in the minimum number of guesses?

Inspect Your Gadgets
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Inspect Your Gadgets

16 to 18
Read about the mathematics behind the measuring devices used in quantitative chemistry
Some old-fashioned cinema tickets.
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Cinema Problem

11 to 14
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A cinema has 100 seats. How can ticket sales make £100 for these different combinations of ticket prices?

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