Explores the relationship between mathematical concepts and the circumstances of learning as they relate to within-individual variation. Analyzes previous results on mathematical concepts in and out of school in terms of their similarities and differences. (RJC)

Why percent is such a difficult mathematical concept to learn was explored in this review. The privileged language of percent has lost explicit references, has misleading additive terminology for multiplicative meanings, and has multiple uses for the preposition "of." Implications for teaching percent more effectively are discussed. (SLD)

Limitations in children's understanding of the symbols of arithmetic may inhibit choice of appropriate solution procedures. The teacher's role involves negotiation of new meanings for words and symbols to match extensions to solution procedures. (MKR)

Provides measurement, estimation, and data analysis activities for grades three to four and five to six using boxes of cereal and containers of frozen yogurt. (MKR)

Presents a sixth-grade student's fictional story and illustrations using economics vocabulary words learned in mathematics class from the storybook, "How to Turn Lemons into Money." (MKR)

Interviews with fourth, fifth, and sixth graders found that they thought about the concept of average as mode, median, and/or a procedure. Presents approaches to develop the concept of average. (MKR)

Describes four teaching activities to help children extend math problem-solving skills by using their own questions. Activities involve using a chart and symbols to develop equations adding up to 12, going on an imaginary shopping trip, using shapes to represent dollar amounts, using the date on a penny to engage in various mathematical…

Describes the use of spreadsheets to discuss mathematical concepts without using algebraic notation. Presents examples using Fibonacci numbers and factorials. (MKR)

This column discusses five children's books selected to develop math concepts involving problem solving, reasoning, and communication. The books are "Only One" (Marc Harshman); "The Librarian Who Measured the Earth" (Kathryn Lasky); "Counting Jennie" (Helena C. Pittman); "The Search for Delicious" (Natalie Babbitt); and "The Toothpaste…

Discusses some of the history of casting out nines and the controversy surrounding its use as a method of checking. (17 references) (MKR)

Discusses how adults in the Brooklyn Public Library Adult Literacy Program use writing (particularly poetry) to deepen their knowledge of spatial reasoning, fractions, and percentages. (RS)

Provides a review of four complimentary mathematics dictionaries sent to the author. Evaluates the dictionaries for their audience, content, and accessibility to elementary and secondary school students. (MDH)

This study of 137 students in grades 6 through 8 found no significant differences between the mean scores of sixth and seventh grade students with and without inhalant allergies on a mathematics concepts subtest, but found that eighth grade students with inhalant allergies performed better than eighth grade students without inhalant allergies.…

Utilizing composition of elementary functions as prototype of dynamical system, notions of periodic points and their orbits in relation to concept of shift map are used to illustrate concept of continuity. A special case of Sarkovskii's theorem, dealing with period-3 point, is presented with proof relying solely upon Intermediate Value Theorem and…

Describes activities using students' names to teach concepts of counting, measuring, and predicting. (HTH)