Discusses the tessellation with circles and presents mathematics activities on tessellations with circles. (ASK)

Presents mathematics activities focusing on explorations in the environment that include visual or geometric components. (ASK)

Presents the steps and lessons for making the "Measure Me" doll in which students experience numeracy when they use their own birth statistics to create a doll. Through this sequence of activities, learners relate what they already know about themselves to new situations where they compare their heights and weights with those of other children.…

Presents an activity that projects Easter dates into the distant future by using the Gregorian calendar. (ASK)

Describes ways to examine leaf structure and shape using fractal geometry. Students can test hypotheses using the leaves of replicated plants to look for non-linear trends in leaf shape along the stems of plants, across species, and under different environmental growth conditions. (SAH)

Presents a method to make precalculus college freshmen accountable to the class for doing at least some of their assigned homework problems by making each student an expert on one or more of the assignments. (ASK)

Introduces the necessary game-theoretic background and explains how game-theoretic experiments of the Matching Pennies game can be used as a classroom activity to develop intuition about saddle points. (Author/ASK)

Discusses how an alternative assessment approach using journaling can reveal so much more about a child's understanding of mathematics. (ASK)

Discusses the benefits of new technologies, especially graphing calculators, in the teaching and learning of mathematics. Presents two activities for teaching algebra and regression using graphing calculators. (ASK)

Introduces The Square Thing, a lesson that engages and invites student development of problem solving and reasoning skills, understanding through connections within the content, and mathematics voice. Describes components for successful pedagogy and benefits for students experiencing this and similar mathematics pedagogies. (Author/MM)

Discusses using Alan Bell's "Principles for the Design of Teaching" with student teachers. Discusses choosing genuine and substantial mathematical activities, exposing and resolving cognitive conflict, using flexible tasks in which the degree of challenge can be adjusted or a single starting point can develop into multiple tasks, using feedback,…

Argues that by celebrating the number pi with special mathematical activities we may be teaching the fundamental concept of the place-value structure of our decimal place system. Includes several examples to illustrate the argument. (MM)

Discusses the effects on healing of attitude, positive thinking, and affirmations. Presents a mathematical example of hypothesis testing. Results point to the desirability of discussing such ideas with students to emphasize that the use of hypothesis testing is not simply a mechanical procedure. (ASK)

Helps students identify the animal that corresponds to the year of their birth according to the Chinese zodiac. Defines the structure of the Chinese zodiac so that the subsets of compatibles and opposites form closed substructures with interesting mathematical properties. (ASK)

Presents an experiment to test the statistical hypothesis that Oreo Double Stuf cookies contain twice as much filling as traditional Oreo cookies. (ASK)