Discusses a number of important laboratory-related terms worthy of consideration and suggests a classification scheme that may be used to rate individual activities while implying a direction to enhance such exercises. Highlights implications of classifying laboratory activities and clarifying laboratory vocabulary. Contains 11 references. (JRH)

Describes two science activities concerning water density and shares an idea for combining these activities into a third, completely new activity. Demonstrates the joy of rekindling the spirit of scientific thinking in a typical classroom. (PVD)