Three preservice teachers used virtual manipulatives during clinical interviews with students of elementary school age. The technology exposed students' problem-solving strategies and mathematical understanding, promoting just-in-time teaching about the target content. The process of completing and reflecting on the interviews contributed to growth of the preservice teachers' technological pedagogical content knowledge.
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Pamela Edwards Johnson, Melissa Campet, Kelsey Gaber, and Emma Zuidema
Mathematical Explorations: Moving beyond Factor Trees
classroom-ready activities
Terry L. Kurz and Jorge Garcia
An alternative method for teaching prime decomposition explores using tools rather than factor trees.
