Touch screen tablets such as iPads are becoming increasingly popular as educational tools to support children's first language learning in pre-schools. Apps can also be used to support early learning of a second language in English-speaking countries. However, little work has been done to evaluate these apps. The present research developed…

Perceived usability affects greatly student's learning effectiveness and overall learning experience, and thus is an important requirement of educational software. The System Usability Scale (SUS) is a well-researched and widely used questionnaire for perceived usability evaluation. However, surprisingly few studies have used SUS to evaluate the…