In our class, I use a workshop model for teaching math. At the beginning of each unit of study, I administer a pre-assessment in order to determine how much my students already know about the objectives in that unit. Then, I group them according to the pre-assessment scores. The pre-assessments are stored in students' Assessment Binders.
Each day, students gather on the carpet for a mini-lesson (5-10 minutes long) about the day's objective. Then, students divide into preassigned groups to work either with me on the day's objective or with a small group in a center. The students will rotate through the groups every 15-20 minutes.
At the end of each unit, a post-assessment is administered. Students are given their post-assessment scores, which they will add to their Assessment Binders. The Assessment Binder will be sent home periodically for parents to review.