Changing the subject can be tricky for students, especially standard I. what I do advise is that they practice solving two and three step equations and perfect that before they can attempt this worksheet. New teacher, hold your horses with this sheet. Try a few repetitive or modelling a few times the techniques. I tried to use formulas that would be used through out the course so they become familiar with them. There is no need for student to understand the formulas at this stage. just to be able to manipulate is the technique required.