A Digital Resource for Developing Mathematics Teachers' TPCK."

发展数学教师TPCK的数字资源项目正在开发和进行一种高度创新的交互式数字教科书的初步测试，以加强中学数学教师对比例的核心概念的理解，以及他们对如何利用技术来加强教学的理解。该项目由来自SRI国际的专业人士领导，圣地亚哥州立大学、旧金山州立大学、新加坡国立教育学院和应用特殊技术中心(CAST)的数学教育工作者做出了重大贡献。数字教科书结合了SimCalc、几何画板和数据分析软件的元素，从代数、几何和统计的角度教授比例的核心概念。它还包括一些元素，旨在帮助教师了解比例推理的这些使用之间的联系，以及如何将这些工具用于中学生的课堂教学。该项目的基本假设是，拟议的DyaBook将成为数学教师准备和专业发展的高效工具，并最终用于中学生的课堂教学。在实验室、教师准备和专业发展环境中的初步测试为两个核心研究问题提供了初步的经验证据：*DyaBook以何种方式有效地支持教师学习教学和技术内容知识？*DyaBook是否促进了教师对中学数学的连贯性和关联性的理解？该项目探索了非常有前途的新教学材料形式，具有改变我们思考教育文本和教学策略的方式的潜力。

AbstractThe project A Digital Resource for Developing Mathematics Teachers' TPCK is developing and conducting initial tests of a highly innovative interactive digital textbook to enhance middle grades mathematics teachers' understanding of core concepts in proportionality and their understanding of ways that technology can be used to enhance instruction. The project is led by professionals from SRI International with substantial contributions by mathematics educators at San Diego State University, San Francisco State University, the Singapore National Institute of Education, and the Center for Applied Special Technology (CAST).The digital textbook combines elements from SimCalc, Geometer's Sketchpad, and data analysis software to teach core ideas of proportionality from algebraic, geometric, and statistical perspectives. It also includes elements designed to help teachers see the connections among those uses of proportional reasoning and the ways that such tools can be used in classroom instruction with middle school students.The basic hypothesis of the project is that the proposed DynaBook will be a highly effective tool for mathematics teacher preparation and professional development and, ultimately, for classroom instruction of middle school students. Pilot tests in laboratory, teacher preparation, and professional development settings are providing initial empirical evidence about two core research questions:* In what ways does the DynaBook effectively support teacher learning of pedagogical and technological content knowledge?* Does the DynaBook foster teachers' understanding of the coherence and connectedness of middle school mathematics?This project explores very promising new forms of instructional materials with potential to transform the ways that we think about educational texts and teaching strategies.