This text investigates the fundamental principles of calculus by integrating graphical analysis with numerical computation to build a robust conceptual framework. The authors, Arnold Ostebee and Paul Zorn, utilize their extensive experience in mathematics education to present a curriculum that emphasizes the 'Rule of Three'—approaching problems algebraically, numerically, and graphically. The book serves as a pedagogical tool designed to bridge the gap between abstract theory and practical application in undergraduate mathematics.

Educators frequently cite this text as a standard for reform-based calculus instruction due to its focus on multiple representations of mathematical concepts. Experts highlight the balance between rigorous calculation and the development of intuitive graphical reasoning for students.