This series was designed based on an in depth analysis of 4th - 8th grade released test questions over several years. A comprehensive and sequential instructional plan emerged that provides a guide to developing rigorous real world problem solving skills along with mastery of essential skills involving proper and improper fractions, mixed numbers, decimals, percents, graphing, and proportions. The 14 levels of task cards progress in rigor from simple one step problems to rigorous multi step pro