Imagine a wooden cube painted and cut into "unit cubes." A typical activity consists of predicting the number of unit cubes with exactly three faces painted, two faces painted, etc. This article presents extensions of this activity designed to help students develop analyzing abilities and powers to generalize. (JP)

Discusses the role constructivist learning theory is taking in the change of teaching strategies in the science laboratory. The laboratory moves from a place where knowledge is verified to one where relationships are actively investigated through hands-on, cooperative activities. (MDH)