Imagine Learning recommends students utilize Imagine Math 3+ for 60 - 90 minutes per week, which should result in completing two or three lessons within that week.
Additionally, students should strive to maintain at least a 70% pass rate for both target and/or precursor lessons.
Another way to track usage is via lessons passed. Strive to have students pass at least 30 lessons by the end of the school year. Print out an 11" x 17" class progress tracker (in color or black and white), hang it on your classroom wall, and use it to record students' lessons passed in Imagine Math 3+.