I saw this technique being used very effectively in Mark Allday’s Year 10 Computer Science lessons recently. The students have to undertake an extended piece of Non Examined Assessment (controlled assessment in old money) and they undertook a mock task before starting the real thing. The attached proforma was used very effectively by the students to reflect on their progress and also to inform their teacher of common areas of difficulty, facilitating future lesson planning. Students also took this a step further by working in pairs/trios to compare their reviews and talk about next steps or problems that they were able to solve between themselves. It struck me that this approach would work well for any piece of work where there was a preparation task or as a checkpoint during the project.