2018 Volume 40 Issue 1 Pages 53-60
In this study, we devised a teaching method to train students to develop an attitude of critical thinking through argumentation and verif ied the eff icacy of that method through its implementation in a high school chemistry lesson. To achieve this aim, using “argumentation cards” showing the arguments of a hypothetical person, we devised a teaching method that directed students to infer the “data,” “claim,” and “warrant” of an argumentation through some manipulation. We then verif ied the eff icacy of the method in a lesson in basic chemistry for 40 f irst-grade students at a state high school in Hiroshima Prefecture. We concluded that our method contributed to improving students’ inquiring minds and attitudes of ref lective thinking, which form a part of the attitude of critical thinking in science.