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Recipient of the inaugural Daniel Solow Author's Award in 2017 from the Mathematical Association of America.  Click here for an article that appeared in CLAS Acts, a newsletter from the College of Liberal Arts and Sciences at Grand Valley State University.

This textbook is designed for the first course in the college mathematics curriculum that introduces students to the process of constructing and writing proofs.

This book is included in the approved list of textbooks for the Open Textbook Initiative  by the American Institute of Mathematics.

To make suggestions about the book, please send an email message to me at

Items from the book and other resources

Note to Instructors

I have revised the solutions to the preview activities to provide more detailed solution on some and on others, to provide some context and comments about the particular preview activity.

Please contact me at for information about instructor resources such as solutions to the preview activities and solutions to the exercises. In your email, please include the name of your institution (school, college, or university), the course for which you are considering using the text, and a link to a website that can be used to verify your position at your institution.