Biology
The math of living things
6 live exhibits. Each one already works. Change a number and see what happens.
Open as board Play with these together. Solving one grows related exhibits.
StatisticsThe bell curve: what percentile is that?
Count standard deviations from the average (the z-score), and the bell curve tells you what share falls below.
ProbabilityThe birthday problem: 23 people is a coin flip
In a room of 23, it’s better than even that two share a birthday. Every pair is a chance, and pairs add up fast.
Differential Equations & TransformsWhen will my coffee wear off?
Each cup rises, then fades by half every few hours. Cups stack, and the Laplace transform says why they simply add.
Exponents & LogarithmsRapid cooling: 135 °F to 70 °F in two hours
Cooling slows as food nears the fridge temperature. A logarithm says how long it takes, and why shallow pans win.
MatricesHitting your macros: how much of three foods?
Protein, carbs, and fat are three equations, and three foods are three unknowns. A matrix solves all of them at once.
ProbabilityA 99% accurate test, and a positive is probably wrong
When something is rare, the few real cases are outnumbered by false alarms. Bayes’ rule counts both.