Research On The Recommendation System Of Junior High School Chemistry Diagnostic Practice Based On Knowledge Points

Technical service is the purpose of education technology.Junior middle school stage is an important period of student learning,and it is also an import stage of establishment and improvement the students' knowledge system.However,while the Internet has brought knowledge and information to learners,it also brings a lot of interference to learners who are going to face the important turning point in the entrance exam.As a result,junior high school students,parents,teachers and schools are faced with the problem of how to use the Internet to learn more efficiently.Based on this,I have the research idea of making use of the Internet and other information technology and modern educational philosophy to serve the students personalized and efficient learning.In this paper,the research theory is based on the important theory of educational technology,such as "extract practice",meaningful learning,constructive learning theory,Bloom's target classification model,learner characteristics analysis,multiple intelligence theory.Combined with The Ebbinghaus Forgetting Curve theory,Utilized Java development techniques,online practice test paper algorithm,tag-based recommended techniques,and other technical means,I designed,constructed and implemented the Recommended System of Chemistry Diagnostic Practice for Junior Middle School Based on Knowledge Points,and carried out related research work.This paper mainly completed the following work:1.Combined with the related research results of extract practice,meaningful learning and Bloom's six-layer cognitive theory,a knowledge points model of junior middle school chemistry is constructed for the purpose of chemistry domain knowledge.On the basis of this,users can form a hierarchical knowledge system and construct a junior chemistry knowledge database.2.On the basis of the theory of learner characteristics analysis,the learner's characteristic model is established by combining the multiple intelligence theory and the breadth&depth learning algorithm of knowledge.To use knowledge points as a convergence,using test paper algorithm and tag-based recommended techniques,we can recommend the subjects intelligently with the relatively wrong knowledge points and difficulty level,and then help learners to consolidate what they have learned without trace.3.Design and implement the prototype of recommended system,including the design of the system database framework,the main function module design of the three subsystems of administrators,teachers and students,and the construction of the system platform.4.The system will record the students' practice,and the teachers and students can check the mistakes and diagnose them in real time.Using the long-term assessment records of learners,teachers can better know the learner's grasp of different knowledge points,so as to accurately grasp the important and difficult knowledge points,and adjust the teaching methods accordingly.