This study introduces an environment design that integrates wireless local area network, mobile learning devices and client-server architecture to support instruction and learning activities. Every student use a mobile device to participate learning activities. That’s why this study called 1:1 educational computing. Furthermore, this study presents a framework involves three learning activity levels as a basis on which to design an integrated system that supports various types of learning activities. Evaluation of the application showed that it can effectively enhance teaching and learning in the classroom.