Scratch
Useful Scratch Resources:
Scratch online - click on the link called 'start creating'
Oak Academy KS2 online Scratch lessons
Oak Academy KS3 online Scratch lessons part 1
Oak Academy KS3 online Scratch lessons part 2
Learn to code using Scratch with Professor Cody YouTube playlist
How to make a bubble shooter game in Scratch
Professor Cody's code a game competition
Computational thinking using Scratch