Objectives: After completing the lesson, students will be able to:
share the results of a scientific investigation with
Key Question: "What did we learn about dry ice?"
Overview: This activity provides the students with closure for the dry ice block of lessons. It gives each pair of students the opportunity to discuss their results and compare what they have observed with other students. While there is no single way to do this in a manner that is interesting for all students, several approaches are outlined in the Dry Ice GEMS guide (pp. 128-129). Whatever approach is chosen,it is important that students learn the importance of communicating the results of their scientific investigations with other scientists. The validity of scientific investigation depends on reproducibility of results. New ideas are only accepted to the extent that scientists anywhere in the world can reproduce the results of the investigations that led to those new ideas.
Time Required: up to 1 class session.
depends on how one
wishes to structure this session
Procedure: see pp. 128-129
Assessment: verbal presentations and/or class discussion.
OUSD Science Content Standards (State of California Science Content Standards):
Barber, Jacqueline, Kevin Beals, and Lincoln Bergman. Dry Ice Investigations: Teacher's Guide. Berkeley, CA.: Lawrence Hall of Science, University of California, Berkeley, 1999, pp. 123-127.