Collection: STEM & Science

Science, technology, engineering and mathematics, from popular science for general readers through textbooks and reference works. This is one of the best categories to buy used: technical books are expensive new, editions change for reasons that rarely affect the fundamentals, and a previous edition often teaches the same material for a tenth of the price. Well suited to students, homeschooling families and anyone teaching themselves a subject. Every book is inspected and graded before listing. Free shipping on orders over $15.