There are some problems in the teaching of Medical Physics course

such as low learning initiative

deficient grasp of concept

and obstacles to realize the internalization and practical application of knowledge. The PAD (Presentation-Assimilation-Discussion) class is applied in the course

in order to improve the students' learning state. PAD class is a teaching mode proposed from a psychological point

which advocates that teaching is the first before students start to learn and has an equal treatment on students’ discussions and teachers’ instruction

supporting independent learning. The teaching measures include: Selecting course content to reach the balance between simplification and detailed interpretation; Assigning open homework based on the course; Dividing the class discussion into four steps; Assessing students based on the performances of homework and final examinations. The research has shown that the PAD class facilitates improving the students' initiative of study and promoting the absorption and application of knowledge.