PHASE ONE OF A STUDY TO DETERMINE THE EFFECT OF REVISED FILMS ON THE PRODUCTION OF SIGNIFICANT LEARNING BEHAVIOR WAS REPORTED. THE FILMSTRIP, "THE SUN AND ITS PLANETS," WAS SELECTED AND SHOWN TO GROUPS OF FIFTH-, EIGHTH-, AND TENTH-GRADERS. A TEST COVERING THE CONTENT OF THE FILMSTRIP WAS PRODUCED AND VALIDATED. THREE PHASES WERE IMPOSED IN THE RESEARCH DESIGN. THE FIRST VERSION OF THE TEST OF LEARNING FROM THE ORIGINAL FILMSTRIP WAS ADMINISTERED TO 276 SUBJECTS AND VALIDATED. PHASE TWO INCLUDED THE COLLECTION OF DATA FOR THE FIRST REVISION. THE ORIGINAL FILMSTRIP WAS SHOWN TO ANOTHER POPULATION OF 253 PUPILS. PHASE THREE INCLUDED THE COLLECTION OF COMPARISON DATA OF THE REVISED AND ORIGINAL FILMSTRIP. STATISTICAL ANALYSES WERE EMPLOYED ON THE RESPONSES FROM THE ACHIEVEMENT TESTS. THE RESULTS INDICATED THAT CERTAIN REVISIONS WERE SUCCESSFUL, BOTH IN PICTORIAL AND CAPTION PORTIONS OF THE FILMSTRIP. PHASE TWO AND THREE OF THIS PROJECT REPORT WERE ASSIGNED ACCESSION NUMBERS ED 003 534 AND ED 003 535 RESPECTIVELY. (RS)