All course materials posted online should (and legally must) be accessible. Instructors using OER are likely to create learning materials themselves; all the onus of ensuring accessibility falls to us.This is especially challenging for STEM fields where course materials are heavy with symbolic expressions and graphs. One solution is to use the PreTeXt authoring system, which in addition to producing fully accessible output, can embed interactive demonstrations and assessments to improve engagement of all your students.In this hands-on workshop, participants will develop a workflow for using PreTeXt for the creation and distribution of accessible materials. We will explore how to convert existing materials to PreTeXt, and share resources to learn additional features that PreTeXt offers to engage students. Instructors with all skill-levels of PreTeXt, from novice to expert, will gain understanding of what is required to use PreTeXt for every-day teaching materials.