Open Educational Resources (OER) are transforming the higher education landscape by enabling equitable access to resources, increasing transparency of educational content, and reducing the financial burden on students. At a large public US university, low usage of textbooks by students has been observed, perhaps because traditional reading assignments were Too Long, many students Didn't Read (TL;DR). Centralized, free, and online OER were developed to try to increase student engagement outside of the classroom while providing consistency between courses and improving outcomes in the Kern Entrepreneurial Engineering Network's (KEEN) ``3Cs'' --- Curiosity, Connections, and Creating value. These OER efforts included developing a series of reference pages that summarized key course concepts for three fundamental introductory mechanics courses: Statics, Dynamics, and Solid Mechanics. These reference pages are a short-format interactive resource tailored to the material taught at the university, thus ensuring uniformity with the lectures. They included definitions, key equations, expandable equation derivations, figures, and interactive animations. Key ideas were cross-referenced between courses, images and paragraphs were reused, and the same examples and applications were revisited and expanded upon. Such continuity across foundational courses reinforced students' comprehension of how concepts from each course are interconnected. With these features and guiding principles, the reference pages enhanced the educational experience with no financial burden to the students. With the growing popularity of digital note-taking devices, the reference pages were designed with mobile accessibility in mind. Student surveys and web-analytics revealed high satisfaction rates and usage of the course reference pages, and students' perception of the 3Cs significantly increased between the beginning and end of the semester.
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