Top-down Calculus - a concise course: This one-quarter or one-semester calculus course was designed as a part of a UCSD summer program to give high school math teachers extra training in calculus. Key ideas are developed and put to use quickly (e.g., the chain-rule on page 11). This text has been used successfully for UCSD summer school students. The book is on the creative commons (Google Books). Discussion and links can be found at the website of the Department of Computer Science, UCSD: cseweb.ucsd.edu/~gill/TopDownCalcSite/