GENERALIZATIONS WERE CLASSIFIED AND FIELD TESTED, AND A RETRIEVAL SYSTEM DEVELOPED DURING THIS PROJECT. THE SYSTEM DEVELOPMENT INVOLVED ORGANIZING GENERALIZATIONS INTO A LOGICAL SYSTEM OF 10 CATEGORIES. THE CODING PLAN WAS TO ASSIGN A 10-DIGIT NUMERIC CODE TO EACH GENERALIZATION AND CATEGORY. TWO DECKS OF CARDS WERE CODED AND PRODUCED, AND A LIBRARY CONTAINING MOST OF THE SOURCE MATERIALS ESTABLISHED. THE EVALUATION INCLUDED A REVIEW BY A PILOT GROUP OF TEACHERS. EVALUATIONS CONSISTED OF IDENTIFICATION AND A SEARCH OF SOURCE DATA. OBSERVATIONS WERE MADE OF THEIR RESPONSES AND ACTIVITIES. TEACHERS HAD DIFFICULTY USING THE SYSTEM UNTIL THEY BEGAN TO THINK IN TERMS OF GENERALIZATIONS RATHER THAN SPECIFIC FACTS. FUTURE RESEARCH WAS SUGGESTED TO EXPAND THE FILE TO INCLUDE RECENTLY DEVELOPED GENERALIZATIONS AND SOURCES. (RS)