This document discusses tools that teachers already have access to in their classrooms that can help support diverse learners, including tools in common software programs like operating systems, word processors, and web resources. It emphasizes that the cornerstone of Universal Design for Learning is flexibility, and teachers have flexible digital tools like text-to-speech, spelling and grammar checks, and highlighting features in the software they currently use everyday. It also provides examples of free tools and resources teachers can try to further support students' access to curriculum.