Pre-assessment and post-assessment instruments were designed by the teacher-researcher and followed the guidelines established by the Missouri Department of Elementary and Secondary Education‘s Mathematics Grade Level Expectations. The as sessment instruments were designed from an accepted and reliable curriculum and as such the instruments were deemed acceptable.To ensure consistency across the assessments, the items were similar in format, types of knowledge assessed, and levels of cognition. Pre-assessments were administered at the beginning of each unit to measure students‘ prior knowledge. Post-assessments were administered at the end of each unit to measure students‘ achievement. The difference between the pre-assessments and post- assessments score were used to determine the students‘ growth during each particular unit. The student growth measured from each unit was compared to determine the methods impact on student academic achievement. Table 1 lists the numbers of points possible for each assessment. Achievement scores were calculated as a percentage of correct items