The Research on Teaching Mathematics in Undergraduate Settings (RTMUS) is seeking a Research Area Specialist Associate with expertise in task design and knowledge of college calculus and linear algebra to participate in an one-year exciting, NSF funded, project, the PreTeXt-Runestone: Open Textbooks Engaging Undergraduates in STEM [PROTEUS]. PROTEUS Project seeks to understand two interrelated questions: How do groups of textbook users (students, teachers, authors, and researchers) work together to write interactive questions designed to elicit multiple ways of students? thinking in classrooms? and How do students and instructors use those interactive textbook questions in classrooms? The project uses open-source PreTeXt textbooks hosted in the learning analytics platform, Runestone. The project addresses the need to promote student learning through continued engagement with the material they are learning and to provide tools for teachers to engage with the information gathered using those questions?not only their responses but the various attempts to answer the questions. The Research Area Specialist Associate will collaborate with four additional principal investigators, and a large group of authors, researchers, teachers, and students, developing questions for the PROTEUS textbooks during summer workshops and will support teachers in their use of the textbooks throughout the implementation terms, and collaborate in the analysis of student data.