This is by far the best instructional tool used to effectively begin math class and quickly engage all students. My Weekly Challenge/Warm Up Task Sheets have evolved over more than 20 years of middle school teaching from what began as the typical Problem of the Week and class starters. In this packet there are 9 Weekly Challenges with an accompanying Warm Up sheet for each week. The Weekly Challenge problems allow for spiral review while integrating opportunities for mini lessons if needed and problem solving. This particular set works best with 7th, 8th or 9th grade students.
Successful implementation is based upon a consistent weekly process. Students receive a WC/WU task sheet every Monday at the beginning of class. Students have all week to complete the Weekly Challenge problems (which I copy on the front - with the Warm Ups on the back) on their own time. Collect the WC/WU sheets Friday immediately after the Warm Up. The daily Warm Up tasks are used to focus the students quickly at the start of class. The problems I used for Warm Ups have been gathered and adapted from multiple resources and vary in skill and complexity for each class (advanced, inclusion, etc...) The benefits of utilizing the WC/WU not only include the spiral review of content and integration of The Mathematical Practice Standards for CCSSM but it allows for students to be held accountable for the class starter. Students now have a purpose to come to class on time and get focused for the day's lesson. The task sheet is easy for students to manage and it makes grading extremely manageable for the teacher. (I suggest counting the Weekly Challenge side worth 10 points and the Warm Up side worth 10 points. This means every students can earn a possible 20 points every Friday which can easily be converted to a percentage if desired.)