Presents an activity on linear functions that is designed to help students become familiar with the graphs, equations, and tables of these functions while focusing on issues related to cost, revenue, and profit. (ASK)

Investigates the effect of collaboration on problem-solving performance and learning in the context of a complex, video-based mathematics problem. High-achieving 6th-grade students (N=96) were assigned to collaborative or individual problem-solving conditions. Results reveal that students in the collaborative condition outperformed students in the…

Introduces elastic geometry, or topology, into the elementary classroom through the study of connecting the intuitive, visual, and spatial components of storyknifing as well as other everyday and ethnomathematical activities. (ASK)

Presents a lesson on geometry and beadwork with five phases of learning as described by Pierre van Hiele to tell the stories of different cultures and study isometry principles. (ASK)

Describes the development and implementation of a service learning project carried out at Portland State University, including the mechanics of the project and excerpts from student journals with reflections on their growth in this process. (Author/ASK)

Illustrates how to connect mathematics to real-world problems. Describes the calculator-based laboratory system which collects data from the real world and transfers it to graphing calculators. Presents an activity that emphasizes elliptic integrals. (ASK)

Describes the changes in a kindergarten teacher's thinking of what it means to teach and learn mathematics as a result of her participation in a professional development program called the InMath project. Focuses on children's mathematical thinking and characteristics of young mathematicians. (ASK)

Presents a teaching idea to help elementary students gain a sense of the passage of 2,000 years. This time line lesson has students learn when the millennium began, create a personal time line with strips of adding machine tape (marking the tape with their major life events), create a historical time line, then create a 2,000-inch millennium time…

Presents an activity in which students build their flexibility in using numbers and explore the connections between numbers and their representations with base-10 materials using the TI-15 calculator. (ASK)

Describes how the card game Numero helps students improve their knowledge of basic number facts while having fun. Suggests ways in which Numero can best be used in the classroom. (ASK)

Uses a particularly contentious newspaper report that makes a cause-and-effect claim as the basis for discussing the important aspects of statistical understanding. Suggests a hierarchy to help teachers plan for and assess student learning in this area, and closes with a plea for teachers to cooperate across subjects in order to achieve results.…

Describes how classification came alive in a third grade classroom as children searched for rules or properties defining the five Platonic solids, then constructed a precise definition to classify these solids. (ASK)

Presents a student-posed project in which students devise mathematics investigations around their school cafeteria. Discusses learning-related outcomes of the project. (ASK)

Most games have descended from ancient pastimes with simple resources. Illustrates 23 games from around the world discussing different mathematical concepts. (ASK)

Uses the zooming technology of graphing calculators and certain graphing software to help middle school students extend their understanding of slope to curved graphs. (ASK)