Research of the double clue knowledge system of program design

Because the current program design curriculum knowledge system is insufficient, this paper puts forward the double clue knowledge system and redesigns the teaching content, and the author suggests that there should be two main clues which are data representation and program realization in the whole teaching process, and the double clues cross and walk. This knowledge system pays great attention to the students\´ programming thinking and programming ability, and makes the students not only gain the language knowledge and get the programming ability. So, it makes the program design teaching raise from the language teaching to the skill training. With its "fast and slow binding, seizing the big and freeing the small" teaching strategy, the teachers overcome the bottleneck of the traditional program design teaching and their teaching thinking become more clearly; the students master the skill of program design, and they can translate the language knowledge into the programming ability, so the double clue knowledge system and its teaching strategy are worth to popularize.