This thesis proposes an accessible QTI presentation for web-based e-learning by offering an interpretation algorithm and creating a prototype tool to interpret data structure of questions which are built to conform with QTI specification and present them in a format that conforms with WCAG to ensure accessibility for the blind users. The tool also provides new functions that particularly suit the blind users in the test taking process. These functions help users to quickly navigate to previous or next questions that are not answered or navigate to desired questions immediately, check current status of doing assessment by showing answered questions with answers by users, and hide the buttons that are inappropriate to choose at that time. These functions help users to utilize the existing questions in learning management system with screen reader program more proper. The experiment and test are divided into three parts. The first part is to examine the completeness and correctness of the prototype tool. We found that the prototype tool work properly as needed. The Second part is to examine the accessibility of the resulting solutions from the interpretation process to ensure of its conformity to WCAG by checking outcome with AChecker, an accessibility evaluation tool. The results show that they fully conform to WCAG. The final part is to observe users’ satisfaction by testing the tool with people with visual disabilities. The results show that there are no accessibility barriers to blind users and the users are very satisfied with new functions provided by the tool.
