AN INTRODUCTORY, SEVENTH-GRADE PHYSICAL SCIENCE COURSE WAS CONSTRUCTED IN AN ATTEMPT TO DEVELOP A LOGICAL AND COHERENT SEQUENCE OF THE MATERIAL, DEVELOP AN APPRECIATION FOR PRECISENESS OF LANGUAGE AND LOGICAL THINKING, SHOW THE ROLE OF MATHEMATICS IN PHYSICAL SCIENCE AS AN APPLICATION OF LOGIC TO PHYSICAL EXPERIENCE, REVEAL THE SCIENTIST'S SPIRT OF INQUIRY TO THE STUDENT, TEACH THE MEANING AND PHILOSOPHY OF MEASUREMENT, AND DISCLOSE THE NATURE OF PHYSICAL SCIENCE AS A SEARCH FOR FUNCTIONAL RELATIONSHIPS AMONG PHYSICAL OBSERVABLES. A TEXTBOOK AND A LABORATORY MANUAL WERE DEVELOPED WHICH COVER THE FIVE SUBSTANTIVE TOPICS OF (1) NATURE OF MEASUREMENT, (2) CONSTANTS, VARIABLES, AND EQUATIONS, (3) FUNCTIONS AND PROPORTIONALITY, (4) WEIGHT, VOLUME, AND DENSITY, AND (5) MOTION IN A STRAIGHT LINE. SUGGESTIONS FOR FUTURE RESEARCH INCLUDED THE PREPARATION OF SIX ADDITIONAL UNITS OF SUBSTANTIVE MATERIAL, AND A TEST AND EVALUATION OF THE PRESENT MATERIALS. (GD)