A resource I use religiously as a way of showing progressively difficult questions, the Super 9 has differentiated questions in a 3×3 grid so that, in theory, questions get more difficult as you move right and/or down. I got the idea from a colleague (@miss_jobacon on Twitter) early in my teaching career and I have made lots of my own in the last few years. I have taken a snapshot of a few examples and included the files of some others. Thanks must go to various sources such as Corbett Maths and Mathed Up for some of the questions! If you notice one of your resources and would like acknowledgement please let me know.
If you would like to download the files of any of the photo examples please leave a comment and I will sort you out 🙂