Abstract: According to the education theory of “unification of teaching, learning and doing”, “teaching” emphasizes the transition between the mathematical curriculums in high school and college, the penetration of mathematical culture (such as the history of mathematics, the beauty of mathematics, the creation in mathematics), and introduction of the academic front; “learning” bases on the practical application backgrounds, and takes full advantage of the dynamic intuitiveness with the Geometer’s Sketchpad, to vigorously conduct mathematics experiments; while “doing” emphasizes manual making of geometric models (for instance, the ruled surface), and gives priority to the training of practical ability. “Three combinations” are emphasized in our teaching reform, which are the combination of mathematics teaching and mathematics experiment, the combination of the acceptation of knowledge and exploration of mathematics, the combination of theoretical study and manual making. These improve learning interest, practical ability and comprehensive quality of students.