Problems are often answered in mathematics by solving equations. We use letters to represent an unknown number or value. To solve an equation, we need to find what number the letter in the equation ...

This jingle has helped generations of algebra students recall the quadratic formula that solves every equation of the form $latex ax^2+bx+c=0$. The formula is as ...

A central claim of the current reform movement in mathematics education is that students benefit from comparing and contrasting multiple solution methods. Cognitive science research supports the value ...

A worksheet containing four pages of questions on solving linear equations of increasing complexity. The grading structure is similar to that proposed for the new GCSE specification. This resource ...

Borenson and Associates, Inc., Allentown, PA, USA. Boulton-Lewis et al. (1997) used a cups and discs balance model with above-average eighth-grade students. In this model, the unknown is represented ...

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 ...