Since the Internet was introduced in the field of Educational Technology, it has predominantly been seen as an instructional tool. A number of educational technologists point out that the Internet can be a powerful instructional tool that encourages learners to be involved in problem-solving by using a great deal of information and to enlarge and deepen their knowledge by sharing their opinions through a variety of communication tools such as emails, thrilled discussios and chat rooms (Harasim, Calvert, & Groeneboer, 1997; Herrington & Oliver, 2000;Jonassen & Hernandez-Serrano, 2002; Khan, 1997; McCormack & Jones, 1998; Ritchie & Hoffman, 1997; Romiszowski, 1997). These researchers have studied how teachers can use the Internet to help learners construct meaningful learning for problem-solving in real life context and to allow them to be engaged in learning. In addition, they have done research on how to create useful and effective learning environments including design of specific contents, development of instructional strategy, and educational evaluation using the Internet. The popularization of the term web-based instruction shows how many researchers and educators think of the Internet by as tool for teaching and learning.