Abstract
Under the CSCW circumstances cooperative learning was conducted using the the groupware named "KOATTO." Questionnaires were given after the class and students' evaluation was analyzed on the groupware functions, developing skills of practical use of information using the groupware, and the usefulness of cooperative learning using the groupware. The results showed that the groupware could support learners in sharing information within each group or in the whole class and developing skills of practical use of information. The results of factor analysis revealed that two factors were selected : "understanding of opinions and grasping of tasks" and "declaring of opinions and task performing" as factors constructing the evaluation on cooperative learning, and that the use of groupware is effective in learners' accomplishing their goals and maintaining their human relationships.