Project earth science.
By: by P. Sean Smith.
Contributors: National Science Teachers Association.; Horizon Research.
Publisher: National Science Teachers Association
Published: 1995
Place of publication: Arlington, VA
Language: eng
Number of pages: 155
Subjects: Astronomy -- Experiments; Astronomy -- Study and teaching (Secondary)
Notes: "A project of Horizon Research, Inc. Materials for middle school teachers in earth science."

Includes bibliographical references (p. 140-151).