Each unit contains lessons, related homework assignments, and a Unit Test. Students print an assignment, insert the start time in the blank, do the lesson, and then insert the end time. The assignment is corrected (we recommend by an adult) using the Answer Key we provide, and the results reported to us. Students achieving 80% correct (or more) on a lesson advance to the next lesson; students scoring less than 80% are advised to do the related homework before advancing. Students must pass a Unit Test (with 80% correct) to advance; if not, we reassign specific lessons in the unit (as determined from the test results) to ensure mastery of the material. Click Here for more information about MINDsprinting Math.