Do your students need more help with mathematics and quantitative reasoning? We recommend:

A Student's Guide to the Mathematics of Astronomy, by Daniel Fleisch and Julia Kregenow

Buy on Amazon (affiliate link)

This book is ideal for non-science majors taking introductory astronomy courses. The authors have taught many thousands of students over the years in Intro Astronomy courses -- both large and small classes, at large and small universities, at public and private institutions. They know firsthand what topics students most frequently find troublesome, and they address these using a plain-language approach. Topics include: unit conversions, quantitative reasoning, rate problems, exponents, scientific notation, the law of gravity, graphs, spectra of light, parallax, inverse square laws, the H-R diagram, density, escape speed, and Hubble's Law, among others. Dozens of fully worked examples and over 150 exercises and homework problems help readers get to grips with the concepts in each chapter. The accompanying website features a host of supporting materials, including interactive solutions for every exercise and problem in the text and a series of videos in which the authors explain the important concepts of every section of the book: