THIS PROJECT INVESTIGATED TWO PROBLEMS RELATED TO THE DEVELOPMENT OF CREATIVE THINKING ABILITIES AT THE FOURTH-GRADE LEVEL--(1) THE DIFFICULTIES TEACHERS EXPERIENCE IN ENCOURAGING AND GUIDING CREATIVE EXPERIENCES IN THE CLASSROOM AND RELATING THEM TO CURRICULAR CONTENT AND (2) THE DEVELOPMENT OF WAYS FOR COUNTERACTING THE NUMEROUS INFLUENCES WHICH BRING ABOUT A SLUMP IN CREATIVE THINKING ABILITIES, MOTIVATIONS, AND ACTIVITIES AT ABOUT THE FOURTH-GRADE LEVEL. SUBJECTS OF THE STUDY INCLUDED 30 FOURTH-GRADE CLASSES FROM 3 STATES. TEACHERS IN THE PROJECT EXPERIMENTAL GROUPS AGREED TO USE EXPERIMENTAL AUDIOTAPES, AND THOSE IN THE CONTROL GROUPS WERE INSTRUCTED TO USE CONVENTIONAL INSTRUCTION. BEFORE THE EXPERIMENTAL MATERIALS WERE INTRODUCED, A NUMBER OF ASSESSMENT DEVICES WERE ADMINISTERED TO PARTICIPATING STUDENTS. NEAR THE END OF THE SCHOOL TERM AND UPON COMPLETION OF THE EXPERIMENTAL PROGRAM, ALL CLASSES WERE READMINISTERED THE CREATIVITY ASSESSMENT DEVICES. IN SPITE OF THE FACT THAT MANY OF THE TEACHERS IN THE CONTROL GROUPS USED A VARIETY OF DELIBERATE METHODS TO ENCOURAGE CREATIVITY AND THAT SOME OF THE EXPERIMENTAL CLASSES DID NOT PROPERLY USE THE EXPERIMENTAL MATERIALS, THE EVIDENCE WAS IN FAVOR OF THE EXPERIMENTAL PROCEDURES. (JC)