The virtual environment offers students alternative ways of learning concepts.  Educators understand that differentiating instruction is important and that we should not limit ourselves to telling and explaining.  The information in a lecture or demonstration is magnified when students are given an opportunity to actively engage in an activity that provides a way for students to practice, apply or even play with the new content.  A community college professor demonstrates a virtual world activity designed to follow a lecture and provide  students a chance to “build a molecule” in virtual space.