National discourse on science, technology, engineering, and mathematics (STEM) urges educators to attend to the growing demand for a STEM-literate populace. But, what is "STEM-literacy," and how do we, as educators, cultivate opportunities for students to enhance their STEM-literacy, as well as their STEM content knowledge and affect? In this session, I will share action research (conducted at the university and high school levels) that aims to understand the impact of engineering modules on students' cognition and affect. I will share the framework for STEM-literacy and affect, as well as the data collection tools and analysis methods that can be adapted for use in your classroom.