In this paper, a collaborative creation environment for learning activities in a classroom is proposed. It becomes more and more important to think on how learners can collaboratively learn in a classroom, as personal computers are introduced to schools. This learning environment incorporates a typical setting of personal computer classrooms and enables learners to create their own project on their personal computer and share it with others by publishing it to a shared computer. The Squeak eToy tile programming feature is adopted to make scripts for a project and a sharing mechanism of the project is built on the 3D peer-to-peer collaboration environment. Some project examples for this environment are also presented.