This chapter discusses an online curricular tool for pre-service teacher intercultural education programs. The tool is centered on the story of an Indigenous migrant child who was the victim of prejudice in his preschool in Mexico City. The story was inspired by an ethnographic study of a preschool in Mexico City, where an educator faced the challenge of teaching in an environment of prejudice, racism, and discrimination towards Indigenous children. The curricular tool brings to light the ways that the attitudes and values of pre-service teachers towards the inclusion of Indigenous children in the classroom have an impact on learning. Based on role-play, the tool serves as an effective pedagogical strategy to help pre-service teachers identify expressions of prejudice or exclusion in intercultural education.