Practical teaching ability is an important element in the education of normal university students. Based on the sample survey of the interviews for national teacher qualification certificate and the scoring standards, the common causes for scoring loss are given. Based on reflections on our teaching practices, four strategies for developing mathematics students' practical teaching ability in college classes are proposed. First, flipped classroom is adopted to improve the efficiency of instruction; second, component practice is adopted to require everyone's participation; third, information technology is used to enable students to share resources and reflect on their development through comparison; finally, multivariate assessment from different parties is conducted to return different levels of feed-back to the students.