Design And Development Of The Accessible Collaborative Learning System For Blind Student Based On Mobile

Due to the lack of vision,the blind often needs the assistance of the others to survive in daily life.In their work,they often need to cooperate with the others to complete certain tasks.For them,collaborative learning plays an important role in their life.So,it is necessary to pay attention to the cultivation of blind collaboration ability in primary education.At present,the development of mobile technology is becoming more and more mature,and it has already provided good environmental support for cultivating students'collaboration ability in blind classrooms.Combined with voice synthesis,instant messaging,and accessibility technology,the distance between the blind student and the learning environment can be brought closer through the mobile terminal.And they can easily communicate with other learners,communicate with teachers,and communicate with learning materials.Therefore,the paper has designed and developed a mobile application system suitable for collaborative learning activities in blind classrooms.Firstly,the thesis uses literature survey method and interview method to understand the research status of collaborative learning and blind classroom teaching at home and abroad.Secondly,based on the activity theory and the characteristics of blind students,the paper constructs a collaborative learning model of blind students and complete the design of the activity of collaborative learning.And then,based on the programming method,analyzes and decomposes the behavior of the collaborative learning activities and form the requirements document.Finally,develops and tests the system based on the requirements of the document.Based on the accessibility design,the thesis develops a mobile application suitable for collaborative learning in blind classrooms,which realizes the integration of instant communication,speech synthesis and accessibility assistance on the Android platform.The system can support teachers to upload and present the relevant materials in the activities,can support teachers and students to make simple interactions in the classroom,can support blind students to communicate with other immediately during the activity process,and can support blind students to receive activity information accessibility.The results show that the system is running smoothly and with low error.The functions provided by the system are also meet the needs of collaborative learning activities in blind classrooms.In addition,the accessibility assistance provided by the system can also give a high correct rate response result to the operation behavior of the blind in a short period of time,and can support the blind to use the system effectively.