From Pictures to Scientific Representations: An Investigation of Students' Meta-Representational Competence

9553902 迪塞萨 本专题将探讨学生元表征能力的优势与局限性，也就是他们以图画形式表现科学概念与现象的知识。重点将包括学生的能力：（a）设计新的代表;（B）批评，比较和完善他们;（c）选择适当的，并学会有效地使用它们;和（d）了解代表是什么，以及他们如何工作。 本研究将探讨元表征能力与概念发展的关系，并设计和研究有效利用和发展元表征能力的课堂教学活动。 研究结果将有助于教师更好地了解学生在数学和科学学习表征方面的优势和劣势，并将开辟一个有吸引力的新类型的真实科学学习活动，可以让学生拥有广泛的智力风格和能力。 ***

9553902 diSessa This project will investigate the strengths and limitations of students' meta-representational competence-that is, thier knowledge about representing scientific concepts and phenomena in a pictorial form. Foci will include student capability to: (a) design new representations;(b) to critique, compare and refine them;(c) to select appropriate ones and learn to use them efficiently; and (d) to understand what represents are for and how they work. The project will investigate the relation of meta-representational competence to conceptual development and will also design and research classroom instructional activities that effectively utilize and develop meta-representational competence. Results will help teachers better understand students' strengths and weakness in learning representations in mathematics and science, and will open up an attractive new genre of authentic scientific learning activities that can involve students have a wide range of intellectual styles and abilities. ***