Practice Teaching Reform of Discrete Mathematics Model based on D3.js

From the counting principle of discrete mathematics, this paper puts forward a new teaching model, to guide students through the use of D3.js visual graphics library, to realize the dynamic displays of Fibonacci sequence, Yang hui triangle, Pigeonhole principle and principle of Permutation and Combination and realize the visualization platform of counting principle. This teaching model combines the theoretical learning of discrete mathematics with the D3.js experiment. In addition, we have designed the teaching schedule and specific teaching implementation program, so that our teaching model is feasible. At the same time, we also put forward the corresponding teaching evaluation model to realize the evaluation of students' comprehensive performance. This model can not only stimulate students' interest in theoretical learning and improve their practical innovation ability, but also help to further improve the practical teaching system and improve the level and quality of practical teaching. Finally, we hope that the teaching and learning of the counting principle of discrete mathematics will become a good opportunity to experience the beauty of computer programming and mathematics, and thus, more people will have a strong interest in these two aspects, so that they can contribute their own strength to society.