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  • Author or Editor: Anna F. DeJarnette x
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Anna F. DeJarnette

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.

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Gloriana González and Anna F. DeJarnette

An open-ended problem about a circle illustrates how problem-based instruction can enable students to develop reasoning and sense-making skills.

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Edited by Anna F. DeJarnette and Stephen Phelps

A monthly set of problems is aimed at a variety of ability levels.

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Stephen Phelps

Edited by Anna F. DeJarnette

A monthly set of problems is aimed at a variety of ability levels.

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Edited by Anna F. DeJarnette and Stephen Phelps

A monthly set of problems is aimed at a variety of ability levels.

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Edited by Anna F. DeJarnette and Stephen Phelps

A monthly set of problems is aimed at a variety of ability levels.

Restricted access

Stephen Phelps

Edited by Anna F. DeJarnette

A monthly set of problems is aimed at a variety of ability levels.

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Stephen Phelps

Edited by Anna F. DeJarnette

A monthly set of problems targets a variety of ability levels.

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Anna F. DeJarnette, Sahid L. Rosado Lausell and Gloriana González

Turn a typical geometry problem into a great task that promotes students' reasoning and sense making.

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Anna F. DeJarnette, Jennifer N. Dao and Gloriana González

Elicit productive discourse from students as they work through a bicycle rate problem.