Quite often in mathematics we want to change which letter is the subject of the formula, the method for doing this is very similar to how we solve equations. We need to isolate \({t}\) so that it is ...

Mathematics education today is built around a singular metric: marks. For decades, this model has served as the backbone of academic success, teaching students that the number on their report card ...

The subject of a formula is the variable that is being worked out. It can be recognised as the letter on its own on one side of the equals sign. For example, in the formula for the area of a rectangle ...