
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.

Mathematical issues for biologists


Core scientific mathematics

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


Discuss and choose
This activity challenges you to decide on the 'best' number to use in each statement. You may need to do some estimating, some calculating and some research.


Big and small numbers in the living world

Terrariums
Build a mini eco-system, and collect and interpret data on how well the plants grow under different conditions.

Maths is everywhere!



Big and small numbers in biology





Alternative record book



Biology measurement challenge


Packing 3D shapes
What 3D shapes occur in nature. How efficiently can you pack these shapes together?

Ratios and dilutions

Dilution series calculator
Which dilutions can you make using 10ml pipettes and 100ml measuring cylinders?

Robot camera



Disease dynamics - understanding the spread of diseases


Population dynamics - part 4



Branching processes and extinction

Population dynamics - part 6

Chi-squared faker

Population dynamics - part 5

Catalyse that!

Reaction types

Stats statements

Drug stabiliser

Population ecology using probability

Whose line graph is it anyway?
Which line graph, equations and physical processes go together?


Predator - prey systems

Bird-brained

Genetic intrigue

Why multiply when you're about to divide?


Graphic biology

Real-life equations

Is your DNA unique?
Use combinatoric probabilities to work out the probability that you are genetically unique!

Population dynamics - part 3

Blood buffers

Population dynamics - part 2

Population dynamics collection


Population dynamics
