
Triathlon and fitness

Vector walk

Summing geometric progressions
Watch the video to see how to sum the sequence. Can you adapt the method to sum other sequences?

Sitting pretty
A circle of radius r touches two sides of a right angled triangle, sides x and y, and has its centre on the hypotenuse. Can you prove the formula linking x, y and r?

Iff


Always perfect

Perfectly square

Back fitter
10 graphs of experimental data are given. Can you use a spreadsheet to find algebraic graphs which match them closely, and thus discover the formulae most likely to govern the underlying processes?


Bendy quad

Funnel
A plastic funnel is used to pour liquids through narrow apertures. What shape funnel would use the least amount of plastic to manufacture for any specific volume ?

Partly circles
What is the same and what is different about these circle questions? What connections can you make?