"Boss T Maths - Expanding and factoring" is the easiest way to learn and practice how to expand and factor expressions.
The first part - I UNDERSTAND - gives you the rules with many examples and also an animation explaining their geometric representation.
The second part - I TEST MYSELF - provides exercises about expanding and factoring expressions and their use for mental calculation.
Exercises are randomly generated, in other words they are different every time ; so when you run the application, the exercises you have to solve are entirely new !
The app is also linked to Game center, so you can share your results and challenge your friends!