The use of the Web (World Wide Web) has had many positive effects on education. It overcomes time and space limitations in traditional schools. Teachers and students are now using the Web to access vast amounts of information and resources in the cyberspace. Also, learning via the Web enables both synchronous and asynchronous communication. Despite of many benefits of the Web, it may weaken students’ motivation due to lack of face-to-face communication. In this paper, we provide a learning model called Web Project Learning, which is based on the principles of contructivism, to provide motivation and collaborative learning for students in the Web environment. The model is based on the Project-Based Learning model and is revised for use on the Web. The model can also encourage the participation of parents as well as students, and be applied to any subject. We implement our model and show that it can be applied for environmental education as an instance.