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The function of the immune system is to protect and keep us safe. The immune system surveillance will protect us from foreign antigens entering our body and rogue cells that are no longer under cell cycle control. Considering the most recent pandemic, our students must understand how our immune system works and the function of essential cells involved in this system. However, due to curriculum constraints, particularly at the community college, it may not be feasible for non-biology majors or biology majors to experience the fascinating inner workings of the immune system. Undergraduate students enrolled in an introductory biology, immunology, or microbiology course may not fully grasp the magnitude of receptor diversity embedded in our T cells. The creation of an in-class activity highlights the T cell receptor and provides a deeper understanding of T cell receptor (TCR) diversity. Instructors can use the activity in a lecture or laboratory setting where students work in small groups and use clay to construct different TCRs. Students explore TCR diversity using an interactive V(D)J table of antigen codes. The activity sought to engage students in the classroom to reinforce how T cell diversity contributes to the receptor recognizing the many antigens our bodies encounter daily. The ASPECT (Assessing Student Perspective of Engagement in Class Tool) survey was used to determine students' level of collaboration within their group and their experience with the activity. Results show that students welcomed the activity and felt their contributions and actions during the activity promoted learning. 

Textbooks are essential resources for developing immunological literacy. This article emphasizes expanding educational focus beyond traditional technical content to more broadly encompass inclusion and equity in the classroom. Equitable and inclusive teaching requires thoughtful selection of course materials by applying principles of inclusion, diversity, equity, and accessibility (IDE-A), yet clear guidance using these principles for course design, especially in textbook selection, is limited. To address this gap, the authors developed and tested the IDE-A rubric and assessed a sample of immunology textbooks, widely used at both undergraduate and graduate levels, to evaluate the rubric’s utility. Each textbook was rated on the overall commitment to the principles of the IDE-A framework, assessing the extent to which the textbook authors and publishers make a concerted effort to address these principles in the introduction, preface, and/or overall framing of the content. Inclusion and diversity were evaluated by examining evidence of stereotype threat, including the use of names in case studies and questions, the selection of textbook imagery, and how diverse representations, perspectives, and voices were acknowledged and incorporated into descriptions of concepts and historical context. Equity and accessibility were assessed by evaluating availability of textbooks and ancillary materials at no cost or reduced price, availability of multiple textbook formats, and publisher’s provision of accessible versions. Furthermore, the rubric could help instructors maintain diversity within STEM fields. This study is one of the first structured evaluations thatapplyIDE-A principles in textbook selection, demonstrating how looking “beyond the microscope” creates more inclusive learning environments.