Curated OER
Enumeration
In this calculus lesson, students review counting using the principles of Enumeration. They use random selections to count and convert word problems and count. There are 21 problems with an answer key.
Other
English Companion: Reading Expository Text
Taken from "Reading Reminders: Tools, Tips, and Techmiques," the information on this website provides advice on how to read, understand, analyze, and write expository texts.
University of California
University of California: Triangles and Simplices
This site from the University of California deals with different applications and topics pertaining to triangles, particularly triangulation.