This study took place at Skaneateles High School in Skaneateles, New York in a grade 10 Integrated Math AB course with 52 students in 3 sections using the TI-84 Plus family graphing calculators and the TI-Navigator classroom learning system with a projector and interactive whiteboard. New York State is phasing in a new curriculum that integrates Algebra I and Geometry in Math A, and Algebra II and Trigonometry in Math B. The course in the study represents an integrated Math AB class for grade 10. In a typical day throughout the year, students use their graphing calculators to compute answers, to compare answers with other students (via the TI-Navigator system), to generate their own examples or make predictions, and to discuss problem solving strategy with other students. Weekly tests and quizzes are also administered via the graphing calculator. In each of the past three years, 100% of the students have passed the New York State Regents Math A. But closer examination of the percent of students scoring at or above 90% on the Regents Math AB test shows the dramatic impact of the TI-Navigator system: with the TI-Navigator system an impressive 27% more students scored in the 90% range in 2007--62% in 2007 vs. 35% in 2005 without the TI-Navigator system.