Mr and Mrs Wallace hire a van for moving house. They see this advert in the local paper and decide to use this company. When they hand the van back, their bill comes to £59. How many hours did they ...

This example solves a nonlinear system of equations by Newton's method. Let the nonlinear system be represented by ...

Melting and freezing are both physical changes, which are often easy to reverse. To reverse this process, the water would need to be cooled enough until it freezes back into ice. This works because ...

Want to learn more? Sign up for a free five-week email mini-course full of research-backed strategies to help students make sense of math. Give Cindy Cliche a math word problem, and she can tell you ...