The author presents a variation of a tiling problem where each row or column contains a complete set of elements, each diagonal is free of contiguous like elements, and at least one partition exists. These restrictions limit the number of solutions considerably, and methods of solution are subsequently discussed. (CT)

An investigative activity dealing with where to pitch a tent at a campsite is described. (MNS)

A mature science represents a structure of three distinct but related parts: fundamental principles, derived inferences, and observed facts. The meaning of each of these for science activity is discussed and illustrated by Galileo's work. (MNS)

An application of simple linear regression to determine the size of trees from the remaining stumps and tops is described. (MK)

Presents a mathematical treatment of optical propagation in crystals as an eigenvalue problem involving a real symmetrical dyadic. (MLH)

Shows that local equilibrium and energy considerations in an elastic dielectric crystal lead to a simple derivation of the Maxwell stress tensor in anisotropic dielectric solids. The resulting equilibrium stress-strain relations are applied to determine the deformations of a charged parallel plate capacitor. (MLH)

Discusses the use of the exponential function in the compounding of interest. (MLH)

Investigates the differences between students' and instructors' perceptions of similarities among basic computation-related rational number skills. Results indicate that college students in developmental mathematics do see some relationships among rational number computation skills, although not necessarily the ones seen by instructors. (AIM)

Relates mathematics to literature through the story "Pablo's Tree." The students turn flat paper into three-dimensional boxes through the use of riddles, reasoning, and communication, thereby providing the teacher an easy, informal way to assess their level of thinking and understanding. (AIM)