This study aims to develop guidance materials on the topic of evaporation and boiling within the Science course, to use the materials with 5th grade students, and to find out the students' opinions about the implementation of these materials. The participants consist of 10 students studying in a public middle school in the 2020-2021 academic year. The development and implementation processes of the guidance materials are described in detail in the article. A semi-structured interview consisting of 5 questions was conducted with 5 students to get their opinions about the implementation process. Descriptive analysis was used to analyze the interviews. The students expressed the view that the guidance materials were helpful in learning the topic, associating it with daily life, and increasing the teacher-student and student-student relationships. The researchers suggest that similar materials should be developed to teach different science topics.