Presents a trigonometry problem concerning control of the entry of sunlight through a window. (ASK)

Presents a daily group activity of writing equations to assess children's mathematical thinking and progress on a regular basis. Argues that this approach is one way to foster a close relationship between instructional activities and ongoing assessment. (ASK)

Presents suggestions to increase familiarization with the topic index of the "College Mathematics Journal" and points out some ways in which instructors can profit from this information to supplement textbooks. Examples are given of ideas for class enrichment, student exploration, and application. (DDR)

Discusses the value of introducing students to problems that lend themselves to long-term, in-depth analysis at different levels of intellectual accomplishment. Focuses on one such problem in detail. (DDR)

Describes an activity in which students examine bicycle chain-rings, cogs, and gear ratios as a means of exploring algebraic relationships, data collection, scatter plots, and lines of best fit. (KHR)

Presents weekly activities that focus on strategies derived from generalizations and patterns found in explorations using hundreds charts, manipulatives, and other models. (KHR)

Presents activities to find Pythagorean triples using the TI-83, a graphing calculator. (KHR)

Presents a project that addresses several components of the Algebra and Communication Standards for Grades 9-12 presented in Principles and Standards for School Mathematics (NCTM, 2000). Describes doing mathematical modeling and using the language of mathematics to express a recursive relationship in the perimeter and area of the Koch snowflake.…

Presents activities designed to introduce a mathematical idea having several applications for determining the optimal location for a radio station's transmitter and the best locations for a fire station. Includes student worksheets and solutions. (KHR)

Presents a geometric problem and illustrates four different ways to solve it: (1) a synthetic approach; (2) a coordinate approach; (3) a vector approach; and (4) a transformation approach. (KHR)

Presents four methods for solving a quadratic equation using graphing calculator technology: (1) graphing with the CALC feature; (2) quadratic formula program; (3) table; and (4) solver. Includes a worksheet for a lab activity on factoring quadratic equations. (KHR)

Presents a map-projection activity that combines mathematics and geography through investigating the proportion of land and water that covers the earth. Focuses on helping students become familiar with characteristics of different projections or representations of the world while estimating and graphing and encouraging them to investigate the…

Describes an activity inspired by the work of Nobel Prize winner Dorothy Crowfoot Hodgkin involving multilink blocks that helps students develop three-dimensional spatial skills. (YDS)

Uses spreadsheets and programmable calculators to investigate limiting behavior in number patterns. (YDS)

Describes a lesson plan using a chambered nautilus to connect geometry and poetry which can be easily adapted to a wide range of levels. (YDS)