In subject areas, I do not grade class participation. I grade points earned in the subject matter only. Class participation is too subjective, and every teacher does it differently. I try to get one grade each week in each subject.
Some subjects lend themselves to more, some less.
Homework gets one point for completion, and occasionally I grade the actual homework, but only when it is review, and they should know it cold. I do daily reviews in Eng. and math, and I collect one a week in whichever area I need, and I only collect them if they should know all the answers. This keeps the lazy on their toes during morning work. I grade projects, tests, and everything gets one point per item. Tests are usually longer than other work, so they naturally weight themselves heavier.