Mathematics teachers face the challenge of integrating calculator use in their classrooms. Calculators provide advantages for students when performing calculations and they can provide teachers with a versatile instructional tool. Students face high-stakes mathematics tests each year in middle school and must take Regents and college entrance exams during their high school career. It is important to properly integrate calculator use so that students can derive the full benefit of familiarity with the instrument while maintaining a high level of student proficiency with paper and pencil calculations. The goal of my study was to investigate how a student can best learn with the aid of a calculator. I wanted to find out the proper balance of calculator use combined with paper and pencil techniques that work together to give students enduring lessons. Three appendixes present: (1) Consent Letter to School Administrator; (2) Consent Letter to Parents; and (3) Sample Assessment Questions. (Contains 2 tables.)