1. Bourgoin, M. (1990). Using LEGO Robots to Explore Dynamics Unpublished Master’s thesis, MIT Media Laboratory, Cambridge, MA.
2. Braitenberg, V. (1984). Vehicles: Experiments in Synthetic Psychology. MIT Press, Cambridge, MA.
3. Bennett, William (1986). First Lessons: A Report on Elementary Education in America. U.S. Department of Education.
4. Dewey, John (1931). Philosophy and Civilization. Minton, Balch, and Co. New York.
5. diSessa, Andy (1983). “Phenomenology and the evolution of intuitions,” in Mental Models, edited by D. Gentner and A. Stevens. Lawrence Erlbaum Press.