model

対話

interaction

月の満ち欠け

phases of the moon

金星の満ち欠け

phases of Venus

[SUMMARY] This study was conducted to enable students to understand the phases of the moon and Venus through a model and interaction with others. The subjects of the study were 84 12th-grade students from three classes in a public school. During the lesson, each student operated a newly developed model and explained the appearances of the moon and Venus to others. The model is an all-around explanation device that can check on the phases of both the moon and Venus by changing the placement of its parts. The students discovered while operating the model that the appearances of the moon and Venus would change and told other students what they had discovered from the model. The results verified that asking students to operate the newly developed model and tell others about their discoveries facilitated understanding of the phases of the moon and Venus, in comparison with results obtained in a post-survey conducted with 135 12th-grade students from four classes in other schools.