All posts in "blog"

Quadratic Equations

Quadratic equations can be easier to solve if you know a few tricks. This shows you a few of those tricks, such as using the sign of the number term to quickly narrow down the possible solutions, and completing the square, but also explains why we bother to factorise quadratics in the first place.


Why does copper have a weird atomic mass?

Copper has an atomic mass of 63.55. Find out why it’s not a whole number, learn about isotopes, how to calculate moles, stars as nuclear forges, and some nuclear physics too…