Math Open Reference represents geometry concepts visually as a way to complement text definitions and descriptions.
Why UDL?
Math Open Reference is organized into pages that highlight the critical features of geometry concepts. Topics are separated to clarify distinct features. Critical terms are linked directly to a glossary so as not to hinder the viewer based on lack of vocabulary knowledge.
ESOL Online has a helpful list of strategies for activating prior knowledge that are useful for multilingual or monolingual classrooms.
Why UDL?
The strategies listed on the ESOL site, such as concept maps, KWL charts, and graphic organizers, are effective examples of ways to activate and supply students' background knowledge.
WatchKnow is a free, online video library with links to more than 11,000 videos in 2,000 categories including history, math, science and other subjects.
Why UDL?
Presenting ideas through video is another way in whcih key concepts can be illustrated non-linguistically.