THIS TEACHER'S GUIDE IS DESIGNED FOR USE WITH AN ELEMENTARY SCIENCE STUDY UNIT, THE "BEHAVIOR OF MEALWORMS." BY MAKING CAREFUL OBSERVATIONS AND PERFORMING SIMPLE EXPERIMENTS, THE CHILDREN LEARN HOW TO APPROACH A PROBLEM, HOW TO INTERPRET AND EVALUATE DATA, AND, IN GENERAL, HOW TO CONDUCT A SCIENTIFIC INVESTIGATION. THE MATERIALS HAVE BEEN CLASSROOM TESTED, PRIMARILY WITH GRADE 6 STUDENTS. VARIOUS TEACHING SUGGESTIONS ARE PROVIDED AND NUMEROUS PHOTOGRAPHS, CHARTS, AND DRAWINGS ARE INCLUDED. APPENDED ARE (1) A LIST OF NEEDED MATERIALS, (2) INFORMATION ON MEALWORMS INCLUDING SUGGESTED CARE AND LIFE HISTORY, (3) SUGGESTIONS FOR EXPERIMENTATION WITH MEALWORMS, (4) SUGGESTED READINGS, AND (5) A REVIEW OF SOME EXPERIMENTAL WORK USING MEALWORMS. THIS DOCUMENT IS AVAILABLE FROM WEBSTER DIVISION, MCGRAW-HILL BOOK COMPANY. (DS)