REFERENCES
1. Abelson. H.. and disessa, A.A. Turtle Geomelry: The Computer as a
Medium for Exploring Mathematics. MIT Press, Cambridge, Mass.,
1981.
2. Bolt, R.A. Spatial data-management. Rep., Dept. of Architecture.
MIT. Cambridge. Mass.. 1979.
3. diSessa. A.A. A principled design for an integrated computational
environment. Hum.-Compui. Interaction I, 1 (1985). l-47.
4. disessa. A.A. Notes on the future of programming: Breaking the
utility barrier. In User-Centered Systems Design, D. Norman and
S. Draper. Eds. Lawrence Erlbaum. Hillsdale, N.J., 1986.
5. Goldberg. A.. and Robson. D. Smalltalk-80: The Language and Its Implementafion. Addison-Wesley. Reading. Mass., 1983.
6. Papert, S. Mindstorms:
Acknowledgments. We gratefully acknowledge the
efforts of all those members of the Boxer Groups at
MIT and Berkeley who have helped to make Boxer
(almost) a reality. Special thanks to Michael
Eisenberg, Gregor Kiczales, Leigh Klotz, Ed Lay,
and Jeremy Roschelle.
1. Abelson. H.. and disessa, A.A. Turtle Geomelry: The Computer as a
Medium for Exploring Mathematics. MIT Press, Cambridge, Mass.,
1981.
2. Bolt, R.A. Spatial data-management. Rep., Dept. of Architecture.
MIT. Cambridge. Mass.. 1979.
3. diSessa. A.A. A principled design for an integrated computational
environment. Hum.-Compui. Interaction I, 1 (1985). l-47.
4. disessa. A.A. Notes on the future of programming: Breaking the
utility barrier. In User-Centered Systems Design, D. Norman and
S. Draper. Eds. Lawrence Erlbaum. Hillsdale, N.J., 1986.
5. Goldberg. A.. and Robson. D. Smalltalk-80: The Language and Its Implementafion. Addison-Wesley. Reading. Mass., 1983.
6. Papert, S. Mindstorms:
Acknowledgments. We gratefully acknowledge the
efforts of all those members of the Boxer Groups at
MIT and Berkeley who have helped to make Boxer
(almost) a reality. Special thanks to Michael
Eisenberg, Gregor Kiczales, Leigh Klotz, Ed Lay,
and Jeremy Roschelle.
