Search

How would you judge a competition to draw a freehand square?

Explore creating 'factors and multiples' graphs such that no lines joining the numbers cross

What's the chance of a pair of lists of numbers having sample correlation exactly equal to zero?

Explore the properties of combinations of trig functions in this open investigation.

Explore the properties of this different sort of differential equation.

Data is sent in chunks of two different sizes - a yellow chunk has 5 characters and a blue chunk has 9 characters. A data slot of size 31 cannot be exactly filled with a combination of yellow and blue chunks, explore what sizes near to 31 can, or cannot, be exactly filled.

Play the game of Poison, Antidote, Water to start to understand the mathematics of associativity and groups.