Determine what it is that you want the students to abolutely know when they walk out of your room at the end of the year. Then narrow it down to what concepts do you want them to be able to explain explicitly at the end of a “unit” or “strand”. Figure out at what time in the year you may want to measure how students are progressing towards your targeted main concept objectives. Then start thinking about how you will assess those skills and concepts.
What are the skills and concepts that you would like your sixth graders to know at the end of the year?
What units are you planning on teaching?