This article describes a calculus lesson that illustrates the nature of cycles in simple systems of nonlinear differential equations through the use of the Lotka-Volterra predator-prey model as incorporated in the computer software package, Phaser (version 1.0). (JJK)

A general common-sense model of interactive teaching is presented, including conscious and partly or totally unconscious decision making. The model assumes that the teacher wishes to choose actions that are as appropriate as possible to the situation and goals of teaching. Knowledge and emotional variables influence the process. (SLD)

This article presents a problem-solving model of vocabulary instruction in content classes and applies it to a social studies lesson for special needs learners. The guidelines of the five-step model include establishing what is known, highlighting the new, generating connections between the "known" and the "new," gathering information, and…

Total Quality Management is a team approach that challenges administrators to rethink their traditional decision-making and problem-solving strategies. This article describes the use of pilot programs (Key Communicators Network, School Leadership Teams, and a Number "One"derful Idea program) to help teachers feel part of a professional…

Discusses the problem of finding the amount of fence it would require for the outfield fence of a baseball field of given dimensions. Presents different solution methods for each of the levels from grades 9-12. The different methods incorporate geometry, trigonometry, analytic geometry, and calculus. (MDH)

Following a brief historical review of the mechanism of mathematical modeling, examples are included that associate a mathematical model with given data (changes in sea level) and that model a real-life situation (process of parallel parking). Also provided is the rationale for the curricular implementation of mathematical modeling. (JJK)

Reports the results of an observational study concerning mathematical word problems to provide direction for others contemplating analyses of student difficulties from a theory base. Finds that most students experience difficulties in applying past experience, knowledge, and the language of mathematics to form internal world models. (PRA)

Presents a detailed description of an instructional design model called ADAPT (Apply Delayed Automatization for Positive Transfer), which offers guidelines for the development of instructional systems that offer transfer of learned skills. The cognitive architecture is described, the process of skill acquisition is discussed, and two illustrative…

Describes exercises to examine the global carbon cycle. Students are asked to predict consequences of increased carbon dioxide emissions into the atmosphere and to suggest ways to mitigate problems associated with these higher levels of atmospheric carbon dioxide. A comparison modeling exercise examines some of the variables related to the success…

Discussion of the development of information literacy focuses on a study in New Zealand elementary schools that examined teachers' understanding of information skills; teachers' understanding of resource-based learning; the role of the library; a model of information problem solving; students' experiences; conflicting information; and reading and…

Examines the importance of the instructional systems design (ISD) model in designing the presentation and content of technology-based learning (TBL) environments, especially for adult learners. Describes TBLs and their use in university and adult learning and discusses the most common presentation methods: drill and practice, tutorial, simulation,…

Relationships between brain-lesion location and behavior in 33 males and 31 females with unilateral lesions were studied. Statistical tests suggest that a single model can describe the relationships for females, but in males separate models of the relationships between lesion location, verbal intelligence quotient, and performance intelligence…

Explores the potential of the RAY learning environment in improving learning about optics. Results indicate that this environment, which includes a flexible ray-tracing simulation, had a significant effect on the spontaneous and correct use of the model by students in solving problems and a limited effect on conceptual understanding, but promoted…

The topic of wetlands provides a rich context for curriculum integration. This unit contains seven activities that integrate environmental science with math, technology, social studies, language arts, and other disciplines. In this series, students will identify plants and animals found in wetlands, understand the function of wetlands through the…

This paper examines the idea that particular representations differentially support and enhance different cognitive processes, in particular different types of reasoning. Five case studies were conducted consisting of detailed observations of pairs of middle-school students interacting with a computer-based learning environment. The software…