The propose of this study is to study Physics Learning Achievement, projectile motion, using the Mathematica program of Faculty of Science and Technology Phetchabun Rajabhat University students, comparing with Faculty of Science and Technology Phetchabun Rajabhat University students who study the projectile motion experiment set. The samples are Faculty of Science and Technology Phetchabun Rajabhat University Technology students, studying in the first semester of academic year 2011, consisting of 50 samples who study by using the Mathematica program and 50 controlled samples, studying by using the projectile motion experiment set. The instrument used for collecting data is the 30 items achievement test of the projectile motion. Analyze to compare the achievement between the samples and the controlled samples by t-test (Lord, F.M. 1967; Airasian, P.W. and Madaus, G.F., 1972) independent sample. The result finds that the achievement of Faculty of Science and Technology Phetchabun Rajabhat University students who study projectile motion, using Mathematica is higher than the achievement of Faculty of Science and Technology Phetchabun Rajabhat University students who study projectile motion, using projectile motion experiment set at 0.01 level