RUME 26
2024
Omaha, Nebraska
Opportunities for Reasoning-and-proving With Trigonometric Identities in Precalculus Textbooks
Page: 1492
Proving trigonometric identities represents a major milestone in students’ development of proof concepts for undergraduate mathematics. However, few studies have characterized curricular approaches to trigonometric identities. The study presented here examined the ways in which five precalculus textbooks (1) invite students to derive trigonometric identities and (2) target a variety of reasoning and proving actions in trigonometric identity problems. Each research question corresponded to a set of codes that were applied to textbook content. The poster will highlight the major trends observed in the relative frequencies of codes across the five textbooks.