In support of efforts to foreground functions as central objects of study in algebra, this study provides evidence of how secondary students use trigonometric functions in contextual tasks. The author examined secondary students' work on a problem involving modeling the periodic motion of a Ferris wheel through the use of a visual programming environment. This study illustrates the range of prior knowledge and resources that students may draw on in their use of trigonometric functions as well as how the goals of students' work inform their reasoning about trigonometric functions.

Contributor Notes

Anna F. DeJarnette, School of Education, 2160 McMicken Circle, University of Cincinnati, Cincinnati, OH 45221;

(Corresponding author is DeJarnette
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Journal for Research in Mathematics Education
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