, written by Matt A. Bernstein and William A. Friedman, is a supplement designed to bridge the gap between rote mathematical manipulation and physical understanding. Core Premise
The book aims to help students move beyond just solving for a variable and instead learn to "interrogate" an equation. It provides a "toolbox" of techniques—reminiscent of Richard Feynman's famous "different box of tools"—to analyze, simplify, and verify mathematical expressions in a physical context. Thinking About Equations: A Practical Guide for...
Using visual and geometric properties to simplify problems. , written by Matt A
Using units to catch errors or even predict the form of a solution. zero or infinity).
It covers essential but often under-taught skills such as:
Checking if an equation makes sense at extremes (e.g., zero or infinity).