Decision Unit 1 (AQA Specific) WHOLE OF UNIT revision notes
Powerpoint presentation of all topics covered in Unit 1 of Decision for AQA Mathematics. This is in a lot of detail and includes general formulae which I find are really helpful shortcuts to graph theory questions.
There is a lot of detail so if you're looking for a fun revision source unfortunately you probably won't enjoy this! However it has exam-style examples and covers every topic.