An introduction to a useful tool to check the validity of an equation.

This is the technology section of stemNRICH - Core.

This is the area of the advanced stemNRICH site devoted to the core applied mathematics underlying the sciences.

Estimate these curious quantities sufficiently accurately that you can rank them in order of size

PhysNRICH is the area of the StemNRICH site devoted to the mathematics underlying the study of physics

In an extension to the Stonehenge problem, consider the mechanical possibilities for an arrangement of frictional rollers.

Prove that you can make any type of logic gate using just NAND gates.