Hi Tracy:
THe component system works well for many teachers. Using components, differents types of assignments are grouped together to form categories, such as homework, quizzes, lab assignments, discussions, tests, projects, etc. Then percent weight is applied to the category.
Deciding how much weight is kind of a trial and error, but my experience has been to guage factors such as how much time is spent, to what degree does the component contribute to grasping the core concepts, and a fair distribution of weight, to avoid what you identified, having a large percentage ofthe grade come from a single test.… >>>