Below are revision links to various resources that will help you to revise for Unit 2.1.1 - Thinking Abstractly. Further below are the exam questions we have done in lesson with the mark scheme and worked answer.
You need to know:
The nature of abstraction.
The need for abstraction.
The differences between an abstraction and reality.
Devise an abstract model for a variety of situations.
Although it's for GCSE or level 1 computing, it is still very useful for easy definitions of key terms that you need to know for the course and for the exam. Bitesize has a great quiz at the end of the topics to test if you truly know your stuff - a great way to get an idea of where your current knowledge is.
Physics and Math's tutor is a great tool for finding mock papers with the mark scheme and have recently made notes for revision. This link is a great tool for checking any gaps in knowledge you might have and will fill those gaps. Great to use for making flash cards too!
Not as popular as the other resources but from looking over the slides it's a great tool with good examples. Similar to my slides and has some exam questions in the middle, it's like being back at school... just you're at home!
Isaac computing is a legendary tool which even teachers like to use. It's got great definitions and uses real world examples which will help to apply the knowledge that you need to know.