The Design Of Support System On Problem-Based Learning Under The Network Environment

Web-based learning support system is an important support environment in the network education field. Although the current web-based learning support system provides a comprehensive support services for the network education, it is difficult to meet the needs of specific teaching model. Problem-based learning is the more popular, more effective teaching model at the international, and the specific advantages of web environment provide more favorable conditions for the conduction of problem-based learning. But the researchers found that if implementing problem-based learning activities under the web environment, the current learning support system does not adequately meet the needs of teaching. Therefore, researching the support system of problem-based learning under network environment, especially the design of the method has an important theoretical and practical value. The paper researchs the design of the system, its aim is to give a design method for the system.Using the methods of literature analysis, case analysis, system science, instructional design, object-oriented design, the paper has carried out from the following four aspects.(1) The basic analysis of system design. And analyses the basic concepts of the support system of problem-based learning under network environment, summes up the theoretical foundation of the system design, and analyses the related system case. On this basis, the paper discusses the design goals and principles of system, and plans design model of system.(2) Instructional design of the system. Under the guidance of the"study" as the center of instructional design and problem-based instructional design method, the paper analizes the goals and principles of the system instructional design, designs the instructional design model and specific teaching process.(3) Software design of the system. Using the object-oriented software design method, the paper analizes the goals and principles of the system software design. On this basis, designs a system software, including the requirement analysis, design, detailed design and system implement.(4) Development of examples. Under the guidance of the system design methodology, developes web-based learning support systems of "Plant photosynthesis" learning modules.After a series of studies, paper makes following certain achievements.(1) The paper defines the concept of the support system of problem-based learning under network environment; determines constructivist learning theory, problem-solving theory, system scientific theory, instructional design theory and software design theory as the theoretical basis.Planning system design model from instructional design and software design.(2) The paper obtaines the instructional design model, which thinks that the system should be designed in several links, such as learning goals analysis, learner analysis, the creation of the problem situation, problem- solving design and evaluation design.(3) The paper obtaines the software design model, which thinks that the system should be adopted the three-tier system architecture, and divided into three major subsystems, including the management subsystem, the problem subsystem and the problem-solving subsystem. The paper constructs software modeling method from several points of view, such as model abstraction and model process, which provides shared, reusable reference model for system development.(4) Developing an example for the system, applicating design method and model of the support system of problem-based learning under network environment, which verifys their feasibility and effectiveness.The innovations of the paper are as follows:(1) The paper developes a more effective design method and model for the support system of problem-based learning under network environment, and it also provides a reference for the design of web-based study support systems, which supports other study methods.(2) System design balances instructional design and software design, to a certain extent, improves the current learning support system design which can not reflect teaching function well because of lighting instructional design, or can not support software development well because of lighting software design.Future research is mainly to further improve the problem-solving design.