Elementary and middle school education majors in Australia (n=326) and the United States (n=378) were asked to arrange a list of decimals in order from smallest to largest. Only about half of these preservice teachers in each country were able to complete the task correctly. (MKR)

Offers examples of loss of accuracy when using digital computing devices. Discusses causes for loss of accuracy and methods of preventing loss. Presents implications that loss of accuracy has for mathematics instruction. (MDH)

Presents five teaching ideas which incorporate ideas related to baseball. Includes student worksheets. (MKR)

Eight students with Down's syndrome, aged 11 through 13, were taught to add by counting-on in a 5-day teaching program. Teaching included instruction in component skills and use of precision teaching techniques. All students continued to use the technique six months later and generalized the technique to other materials. (Author/DB)

Preschoolers' performance on two tasks demonstrated that, given a perceptually available set of dolls, they were able to use number words to determine the quantity of a hidden or nonexistent set of items that was in a known ratio to the available set. (MM)

The author of EC 606 784 describes the background of her research, noting her experience with the "TOUCH MATH" manipulative materials to help students with mild disabilities acquire math facts and computational skills. (DB)

Presents mathematics questions to analyze what advertisements are saying mathematically. (ASK)

Discusses the benefits of integrating the history of mathematics into mathematics classes. Provides some worksheets for undertaking this task. (ASK)

Provides information about mathematician Jamshid al-Kashi and his work on calculating mathematical values such Pi or Sin(1). (ASK)

Presents two different research tests for teachers to conduct in their classrooms to gain insight into their students' number sense. Provides test results from Taiwan for comparison. (ASK)

Presents a mathematical puzzle that asks about "missing" area and leads to an exploration of the Fibonacci sequence as well as genuine inquiry in plane geometry connected to algebra. Discusses the inquiry, the concepts, the solution, and an extension that deepens all students' understanding of the connections between algebra and…

Presents activities that allow primary grade students to develop specific thinking strategies for basic facts such as counting on, using doubles, and making 10 in problem-solving settings. Discusses other topics such as probability, spatial sense, and money. Offers rich opportunities for reasoning and communication. (ASK)

Students' belief that a larger number has more factors is outlined as a particular example of 'the more of A, the more of B' intuitive rule. Discusses the robustness of this belief by demonstrating students' tendency to perceive conflicting evidence as an exception to the rule. Considers some pedagogical approaches. (Contains 12 references.)…

Reviews some fundamental mathematical ideas on sets and counting. Provides problems based on those ideas and their answers. (ASK)

Presents two activities on addition, one for classifying and one for symmetry. (ASK)