'"mm 



lava. It is not surprising then that there is much 

 interest in the computer modeling of DLA and 

 its variants. Using the computer simulation of 

 DLA, the student can discover new structures 

 that are aesthetically beautiful and at the same 

 time have physical meaning. Students model 

 structures ranging from snowflakes to cancer 

 cells. In the illustration, a student models 

 straight DLA and ascertains its potential energy 

 distribution along the perimeter. As a conse- 

 quence, the student disco\ers that the most 

 active regions on the cluster are near the tips. 



SPONSORING AGENCIES AND 

 ORGANIZATIONS 

 ED 



NSF 



PERFORMING ORGANIZATIONS 



Bellcore 



High Schools in Illinois and Michigan 



Learning through Collaborative Visualization 



National Center for Supercomputer Applications 



Northwestern University, Department of Psychology 



San Francisco Exploratorium 



University of Illinois at Champaign-Urbana 



University of Michigan. Computer Science 



Technology-Dissemination Participants 

 Ameritech 



ScienceKit Publishers 



Technical Education Research Center and affiliated 

 (national) LabNet teachers 



Diffusion Limited Aggregation 

 Akron High School, Akron, OH 

 Boston University, Boston, MA 



147 



