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Very Old Man

Is the age of this very old man statistically believable?

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bioNRICH

bioNRICH is the area of the stemNRICH site devoted to the mathematics underlying the study of the biological sciences, designed to help develop the mathematics required to get the most from your study of biology at A-level and university.

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Catalyse That!

Can you work out how to produce the right amount of chemical in a temperature-dependent reaction?

Blood Buffers

Age 16 to 18 Challenge Level:

Set up two simultaneous equations and solve these. Be sure to use all of the information provided.

This problem will require the confident use of differentiation of logarithms and the chain rule.