 | Mike Fine and Stacey Davis demonstrate solar system model (L) |
 | Teachers listen to Stacey explain a solar system model (L) |
 | The famous cratering demonstration (L) |
 | Making craters (L) |
 | Teachers and Tigger evaluate the results of the cratering demonstartion (L) |
 | Teachers surf the web to study NASA web sites -- "How can I utilize this in my class?" (L) |