At KS3, pupils will learn ASCII Art in programming in Year 8, games design in Game Maker in Year 9 and and Computational Thinking and Python Programming in Year 10!
https://www.bbc.co.uk/bitesize/guides/zts8d2p/revision/1
https://trinket.io/
https://projects.raspberrypi.org/en/codeclub/python-module-2