This is the rubric I use to grade my weekly tasks in my math class. I have seen amazing progress by even my lowest students have improved dramatically in accuracy and in confidence with the writing component of the tasks.
These are the math tasks that go along with my Task Rubric (free!). They align with the Common Core Standards for Secondary Math 1.
I use these as a quiz weekly, after I have taught the material. I grade the task in two parts, 1) the computation-