动态数学数字资源开放平台的研究与设计

Research and design of dynamic mathematical digital resources open platform

摘要:

数字教育资源的共建共享行动已成为当前教育信息化的重要内容和研究热点.经过多年的研究和建设,数字教育资源其价值并未得到充分的利用,反而出现所谓的“资源孤岛”和“数字废墟”.究其原因主要是由于现有的资源平台建设未具有足够的开放性以及学科相关性.基于PaaS结构提出了教育资源开放平台模型,并结合动态几何、计算机代数、几何定理自动推理等技术,采用微服务架构设计并实现了一种动态数学教学资源开放平台.该开放平台具有深入数学学科、开放资源与能力定制化、分级授权等特点.利用OAuth2.0技术作为主要的授权流程,为第三方应用和用户提供认证授权、分级定制化的动态数学内容素材和能力.给出该开放平台的相关特点及总体设计,介绍了面向应用及用户权限的分层策略与认证流程及开放资源与工具的定制化流程.根据性能分析,表明该平台已广泛应用于教学活动中.目前该开放平台已为电子教材、通用演示软件及在线备课平台等多个第三方应用提供服务,得到了广泛应用.

Abstract:

In response to the principle of achieving shared improvement through collaboration, relevant actions taken in the aspect of the digital education resources have become important contents and research highlights of the present information and communications technology (ICT) in education. After years of research and construction, digital education resources are still not fully valued. Even worse, comments such as “resource island” and “digital ruins” have emerged. This is mainly due to the fact that existing resource platforms lack sufficient openness and scientific correlation. This paper proposes a model of the educational resources open platform based on the PaaS structure. By combining the techniques such as dynamic geometry, computer algebra and automated geometric theorem proving, a dynamic mathematical educational resources open platform is designed and implemented by means of micro-service architecture. Moreover, the OAuth2.0 technology is applied to provide third-party applications and users with authentication and authorization, hierarchically customized source materials and the capability to edit dynamic mathematical contents. This paper proposes an overall design of the open platform, gives a hierarchical strategy and an authentication process for applications and user permissions thereof and introduces the process of customizing the open resources and the tools. Currently, the open platform serves a plurality of third-party applications and is widely applied.