Functions Introduction
On this page we shall introduce functions, and spend some time looking at the basics of how we write them and how they work.

In this first video we introduce the idea of a function as a machine, and look at function notation.


In the second video on introducing functions, we look at mapping diagrams, and what makes a mapping a function.


In this final introductory video to functions we take a deeper look at the domain and range of a function, and how we can work them out, both using algebra and a graph of the function.

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