Calculus and Differential Equations are gatekeeper courses for many areas of study. Authors of those materials are often so brilliant and knowledgeable in their field that they make incredible and unfounded assumptions about the readiness of their reading audience. Math Books by Dan present a trilogy of books written using presentation techniques learned over a career of teaching grades 5-12: anticipatory sets, interactive applets, schedules of reinforcement, repetition, connection to real-world applications, pacing, spiraling of concepts, color coding, parallel concepts, illustrations, and a copious use of visuals.
Brands: Please access my three websites:
www.mathlogarithms.com
www.calculusbook.net
www.differentialequationsbook.com
for animations and sample material.