I have been using these lessons challenges with a series of groups and they appear to have been really well received. Like many professionals, I have been trying to get to grips with the Micro:bit and find resources or lessons for my students to have a go at. There are loads around and this is a collection of progressive tasks that I think have been put together in a really coherent way for the teenage mind. Each one is a video tutorial which will guide your students through each step and provide them with the theory behind each decision made in the program. I would love to know your thoughts and I will add more, as and when they arrive. I have used this resource over three lessons... a great filler once the students get to grips with it. This also now includes a Python activity as well as Block Editor challenges. in terms of assessment and monitoring progress... I have been keeping a very simple spreadsheet and inputting when the student has been to show me their finished task - this means that I can open a dialogue with the student and find out what they found easy/difficult with the task, as well as being able to redirect them onto another task or target misconceptions.