Explains how students can be guided to model the invention process using potatoes. Details the steps and the materials used in the modeling, including the phases of the invention process. Presents this activity as preparation for the Invent America program. (DDR)

Recursion is a central concept in computer science, yet it is difficult for beginners to comprehend. Israeli high-school students learn recursion in the framework of a special modular program in computer science (Gal-Ezer & Harel, 1999). Some of them are introduced to the concept of recursion in two different paradigms: the procedural…

Forgetting in long-term memory, as measured in a recall or a recognition test, is faster for items encoded more recently than for items encoded earlier. Data on forgetting curves fit a power function well. In contrast, many connectionist models predict either exponential decay or completely flat forgetting curves. This paper suggests a…

Research has established that students enter their science classes with ideas about the natural world that do not align with accepted scientific beliefs. The diagnosis of these student preconceptions may be seen as an initial, crucial step in the process of teacher-facilitated conceptual change. So as to capture what science teachers do in their…

The article reports results from a research facilitated learning project carried out in an engineering department in an oil and gas company. The objective of the project was to enhance an awareness of and the ability to use, dialogue and reflection-based learning approaches. The results document that the project-based engineering setting induces…

This article provides an empirical evaluation of an indexing technology, topic maps (ISO 13250), in the context of an academic task in a higher education context. Topic maps are a form of indexing that define and display the interrelationships between various topics in a given domain, as well as anchor these topics to specific resources that help…

In many literacy classrooms, students engage in public performances in which they use various texts, movements of their bodies, and verbal interactions. How do we interpret such events? In this article, we critique a representational mode of interpretation and describe an alternate mode. We argue that literacy performances are often about creating…

Schools are professional work groups requiring the application of professional knowledge to constantly shifting educational challenges as adults work to help students learn. This paper describes a theory of professional visualization through which principals can make their professional practice consistent with their knowledge, values, and…

Hypermedia as a learning environment complements traditional instruction as it places the student at a higher level of control. Instead of "wait and see" what the teacher expects the student to learn next, hypermedia stimulates the student to become aware of his/her own cognitive needs and interests. This paper presents a combination of notions…

A cognitive or internal representation refers to an organized system of information which reflects certain, but not all, of the information about reality being represented. This paper considers various opinions, controversies, and debates about what representation is, how it comes about, and what forms of representation can be distinguished. The…

This research focuses on the graphics calculator in calculus and its impact on students' abilities to work with graphical, numerical, and symbolic representations. Three courses are compared, two of which are taught with less emphasis on the use of graphing calculators. The format of the course emphasizing calculator use is more traditional than…

The Student-Centered Activities for Large Enrollment University Physics (SCALE-UP) project at North Carolina State University (NCSU) is developing a curriculum to promote learning through in-class group activities in introductory physics classes up to 100 students. The authors are currently in Phase II of the project using a specially designed…

Student-centered classrooms are characterized by shared responsibility, curriculum adjustment to reduce the number of topics or to increase emphasis on a subset of topics, a high premium placed on student-generated questions and investigations, and collective validation of students' ideas as a central feature of the teaching and learning process.…

Interest in mathematics learning that focuses on understanding, mathematical reasoning, and meaning-making underscores the need to develop ways of analyzing classrooms that foster certain types of learning. The goal of this paper is to show that the constructs of social and sociomathematical norms, which grew out of taking a symbolic…

This book focuses on three particular context-specific accounts of scientific thinking. The first section of the book presents research focused on extending knowledge of the fundamental components of scientific thinking. In the second section, research is presented that is focused primarily on how to build a structure for scientific thinking in…