A short post, this. Just a link to a useful NCETM article on functions. I haven’t taught this yet, but I remember getting pretty upset by the notation f(x), fg(x), etc. when I learned it at school. One way of dealing with this might be to say that they have already encountered this function notation when doing trigonometry, after all sin(x) means sin *of* x, not sin *times* x. But then don’t we also say “*of means times*“. Arghh!

Anyway, it’s a great article and includes some ideas about linking this to:

- area and scale factor:

2. angles

3. graphs

https://www.ncetm.org.uk/resources/49564

## Ideas for better maths teaching