Describes a teaching method that actively involves elementary school children in science lessons by having them teach lessons to their peers. Gives examples of teacher and student strategies. Describes evaluation of the students and student progress with time. Reviews depth of thinking and questioning by students in this activity. (CW)

Describes a science activity done with sixth graders during a unit on outer space. Uses the "Discovery Lab" software program to introduce controlled and experimental variables to the children. Discusses the coordination of library research, computer time, and creative drawing to study planetary environments by designing representative aliens. (CW)