| In the information age,high-tech innovation ability has become an important indicator of a country's core competitiveness.As one of the core qualities of creative talents,computational thought has played an important role in the fields of industry,art and commerce.Early secondary schools can help students understand and master computational thinking by arranging programming courses.However,there is no clear programming principle for popular programming online courses and textbooks.For some ingenious algorithms,students can only understand what the textbook gives them.And the convenient algorithmic process development method(PAR method),proposed by professor Xue jinyun,is able to articulate the process of the process of elaboration.Based on independent research and development in this lab,the convenience of model driven software development platform(PAR)and cross-media combination technology as the foundation,the extension of the PAR method related content design for the algorithm program design online teaching platform,to understand and teach students to use learning to PAR method algorithm is derived from the question to the final executable program the whole process of operation..In this paper,we analysis and study the feature and function of PAR platform and cross-media technology.According to the PAR method(produced by professor XUE JY),we refine existing lessons of algorithm program design.Then,reformed the algorithm design teaching procedure for blended learning requested by algorithm program design education.According to these features,transformed teaching multimedia and PAR platform translation into algorithm program design lesson cross-media.With the help of web service based on SOAP,we have deployed multi-media web service and PAR translation web service to the server successfully.We take the web service and web pages into algorithm program design online education system.With “cubic sum” algorithm question dealt by PAR method as example,we simulate the students learn how to use PAR method to solve algorithm problems.At last,we evaluated the learning effect of our online education systems.The main originalities of this paper lie in:(1)In the course of teaching content,there is no algorithm teaching method that can fully explain the origin of the complex algorithm.PAR method through kayak problem,find out the recursive relations,finally build loop invariant and algorithm way of problem solving,can be very convenient to students clear the essence of the origin and the algorithm of the algorithm.In this paper,the method of the PAR method is refined into an algorithmic design course.Based on the PAR platform,the online teaching of algorithmic programming is designed to enable the students to learn the most advanced algorithm programming method.(2)In this paper,the method of PAR is combined with the design of an algorithmic programming course based on the PAR platform.According to the characteristics of each teaching link learning to "Great Teacher" video education resources and PAR platform Apla conversion algorithm program run function combination in the form of Web services for cross-media algorithm knowledge structure.Students can easily learn how to solve algorithmic problems by using the PAR method by requesting multimedia teaching resources.Based on PAR method after solving the problem of the cubic and algorithm course as an example,the simulation of students how to use the online teaching platform PAR method solving the problem of ingenious algorithm and manually write operation algorithm program,the final algorithm through simulation students learning evaluation algorithm programming teaching effect.(3)Unlike the popular MOOC online teaching system at home and abroad,there are more and more kinds of multimedia teaching resources in the course of cross-media combination technology.All the teaching resources are combined in the way of Web services to form a cross-media knowledge point that is consistent with the learning and cognitive law of today's students.And converts PAR platform in the form of Web services to PAR platform online programming module can train the student's beginning ability themselves and encourage students' autonomous learning,active writing course or interpretation of the existing algorithm based on the knowledge to create new algorithm. |
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