Noticing the regular movement of the Sun and the stars has led to a desire to measure time. This article for teachers and learners looks at the history of humanity's need to measure things.
Find out about the research activities of the NRICH team and other colleagues here.
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Have a look at all the information Class 5 have collected about themselves. Can you find out whose birthday it is today?
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10 intriguing starters related to the mechanics of sport.
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Mathmo is a revision tool for post-16 mathematics. Give yourself a mathematical workout!
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Players take it in turns to choose a dot on the grid. The winner is the first to have four dots that can be joined to form a rhombus.
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Is it the fastest swimmer, the fastest runner or the fastest cyclist who wins the Olympic Triathlon?
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You and I play a game involving successive throws of a fair coin. Suppose I pick HH and you pick TH. The coin is thrown repeatedly until we see either two heads in a row (I win) or a tail followed by a head (you win). What is the probability that you win?
