I have been a teacher for over 20 years - all the stuff I upload has been tried and tested in my classroom. I don't mind a discussion on Twitter too where I also share new resources. I now have a personal website: https://andylutwyche.com/
These tasks allow students to build up the challenge by completing increasingly challenging questions on a given topic; ideal for end of topic tasks, revision or AfL.
All these are available for free but if you are short of time鈥�