I’m a big fan of using templates that can be stuck into shop folders or into sheet protector pockets, written on using dry erase markers, and erased for the next problem. Students really enjoy this less permanent form of showing their work because it is easy to edit and adjust their solution as they work, and then they can copy the process onto paper if needed to show work when they finish.
Here are dry erase templates I’ve created:
Mastalio. Math. Mavericks. 