This study aims to examine how teaching the Toulmin model helps students grasp the content, structures, and logical development of expository texts, deepen their understanding, and apply the reading experience to another text. Instruction was given to 10th year students using "Kokoku no keijijogaku"（by Iwai Katsuhito） and "Media ga tsukuru shintai"（by Ogiue Chiki）. The students reported that the Toulmin model helped them grasp how the logic developed and deepened their understanding of the texts. Some reported that they were more motivated to make use of the knowledge acquired for future reading. Others reported that they compared the two texts and recognized the differences in structure.