DESCRIBED ARE LABORATORY EXERCISES IN OCEANOGRAPHY DEVELOPED FOR USE IN HIGH SCHOOLS BY THE SECONDARY SCHOOL TEACHERS IN THE 1967 NATIONAL SCIENCE FOUNDATION (NSF) SUMMER INSTITUTE IN OCEANOGRAPHY AT FLORIDA STATE UNIVERSITY. INCLUDED ARE SUCH ACTIVITIES AS (1) THE MEASUREMENT OF TEMPERATURE, WATER VAPOR, PRESSURE, SALINITY, DENSITY, AND OTHERS, (2) THE CONSTRUCTION AND USE OF EQUIPMENT FOR MAKING VARIOUS DETERMINATIONS, AND (3) LABORATORY DEMONSTRATIONS INVOLVING SUCH PHENOMENA AS LAND AND SEA BREEZES, GENERAL WIND CIRCULATION, SURFACE WAVES, INTERNAL WAVES AND OTHERS. EACH EXERCISE INCLUDES (1) A BRIEF DISCUSSION OF THE PHENOMENON BEING STUDIED, (2) A LISTING OF THE EQUIPMENT NEEDED AND THE PROCEDURES TO BE FOLLOWED, AND (3) COMMENTS ON HOW AND WHEN THEY COULD BE MOST EFFECTIVELY USED IN SECONDARY SCHOOL INSTRUCTION. DIAGRAMS, QUESTIONS, COMPLETION EXERCISES, TABLES OF DATA, AND GRAPHS ARE USED TO DEVELOP CONCEPTS AND TO PROVIDE NEEDED INFORMATION. ALSO REPORTED ARE SUMMARIES OF PROJECTS PERFORMED BY PARTICIPANTS AND SUGGESTIONS FOR THE UTILIZATION OF SIMILAR STUDIES IN HIGH SCHOOL CLASSES. APPENDED ARE (1) A MAP SHOWING THE COLLECTING TRIP AREAS, (2) EQUIPMENT USED ON COLLECTING TRIPS, (3) A SAMPLE OF THE FORM USED FOR RECORDING FIELD NOTES, AND (4) DIAGRAMS FOR THE CONSTRUCTION OF A DIP NET AND A COLLECTING PAIL. (DS)