Our research covers four areas: Teaching and Learning Powerful Ideas, Powerful Ideas Content and How to Represent It, User Interfaces that Aid Learning and Doing, and Inventing Fundamental New Computing Technologies.

We want to start with the teaching and learning of old and new "powerful ideas"; create much better human-computer environments that allow for authoring, sharing and representing the new ideas; create new user-interfaces that can help children and adults "learn and do" the new ideas; and, invent new, fundamental computing technologies to serve as the raw material for the next stage of the computer revolution. We build everything we invent and we engineer our prototypes for the greatest usability. Both of our recent free and open source software prototypes, Squeak Etoys and Croquet have gone out successfully to tens of thousands of users.