The main problem students have with this activity is realizing the difference between the differential equations with respect to the dependent variable and the independent variable. Other than that they work pretty well through this. The discussion of this difference usually comes up in Question 3 where they are forced for the first time to work with a differential equation that is with respect to the independent variable. It is probably worth collecting and grading Q4 or discussing it in class as students often still struggle with these questions and the next time they see them will probably be on the Module III exam. |