I met up with John Fones of Clevedon School last week and while discussing the coming up CAS SW (Bristol) Hub meeting, Blockly came up in the conversation. Blockly is a visual programming editor for educators, parents and children. The editor is like Scratch which allows to snap blocks together in a logical order. The project is still under development but there a some sample applications to play with. I had a go with at the maze, which I found great for teaching conditionals.