Pre-Calculus, Version 2.0: A Teaching Textbook by Greg Sabouri Spiral Bound-Good "Pre-Calculus, Version 2.0: A Teaching Textbook" by Teaching Textbooks, Inc. is a comprehensive resource for teaching pre-calculus in English. The spiral-bound format makes it easy to use and navigate, providing a valuable tool for educators looking to enhance their students' understanding of pre-calculus concepts. With a focus on teaching and educational techniques, this textbook version 2.0 is a valuable addition to any math curriculum.