The trade math a plumber or pipefitter uses on site, taught from the ground up with no assumed background.

Lee Smith’s eighth edition has been an apprenticeship and trade-school text for years. It starts with whole numbers and fractions, then works up through measurement, geometry, offsets and travel, and pipe capacity, keeping every topic tied to the sort of problem that turns up on a job rather than in a math class. Suited to apprentices, HVAC and mechanical trades students, and anyone going back over the numbers before a journeyman exam. Cengage Learning (Delmar) paperback, ISBN 9781285397801.