This paper suggests the solution to build a Full Virtual Reality Learning Environment, and we have built both virtual and real laboratories on the web, in which students practice their experiments as in a conventional one. In our system, the experiment may be undertaken by a single student or by many students cooperating via networks. We have developed many teaching materials and tools to support experimental operations in a distance-learning environment. Our study suggests a virtual-reality laboratory which is an effective way for experimental operations to be carried out on the web. It is a good experience for us to integrate both virtual reality and cooperative learning for education.