Basic Mathematics through Financial Literacy

By Bonvini, Green, Kershaw, O'Donnell, Richman, and Salter

Business Math!
developed by a saddlemaker but useful to all

By Verlane Desgrange

Money Matters Modules for Teaching Financial Concepts

By D. Wallace, K. Rheinlander, E. Gaze, C. Diefenderfer
And many more (see individual modules for more authors)

Feedback -- Automation,

By John G. Truxal

The Electrification of Los Angles:
Engineering, Science, and History

By Newton H. Copp, Andrew W. Zanella

Researching the Sudden Infant Death Syndrome (SIDS)
The Roles of Ideology in Biomedical Science

By James J. McKenna

Quantitative Examples

Edited by John Truxal

Garbage and Trash
Can We Convert Mountains Into Molehills?

By J. R. Schubel, Homer A. Neal

Color Harmonies and Algebra Tiles

By Cyndy Wilson

Connecting Math With Children's Literature

by Carol Henry and Ellen Nichols