In this study, we aimed to teach elementary school students how to practically deal with elderly people with dementia and developed and evaluated teaching materials using a communication robot called Pepper. The teaching material used the robot to model representative symptoms seen in elderly people with dementia in a realistic context. We applied the two principles of Merrill's first principle and the ARCS model to achieve learning objectives and sustain learning motivation. Furthermore, to verify the effectiveness of the teaching materials, we conducted a questionnaire survey on five experts in community welfare. As a result, it was speculated that by using Pepper, motivation for learning increases and learning can be effectively accomplished. In the future, we aim to introduce the function to the teaching materials based on the evaluation and introduce it to kids' dementia supporter training course.