The Pattern of Mistakes (POMs) marking strategy has been shown to improve students by identifying the pattern of their most common mistakes and prioritizing the order in which they should tackle them. This marking pro-forma includes a master list of the most common mistakes in SIX identified areas (Language, Argumentation, Technical terms, Presentation, Length, and Style), as well as a blank and an example pro-forma of how to use them when marking. This is an editable Word version, so that you can customize it for your own students. You can also read this blogpost for more information: https://www.divingbelleducation.com/post/teacher-blog-a-better-way-of-marking