The first article discusses the general trends that led to the existence of online databases, including the development of books and libraries, mathematics and computation, computers, information systems, and databases. The second presents a timeline of major accomplishments in the online database industry from 1945 to the present. (CLB)

Illustrates exploration of composition of functions, translations, and inverse functions on a graphing calculator. Includes reproducible student worksheets. (MKR)

Archimedes' method for estimating the value of pi is developed and compared with the Gregory-Machin infinite series method. Programs for the TI-81 calculator for finding the upper and lower bounds using the classical method and estimating pi using infinite series are provided.(Author/MKR)

Attempts to answer and generalize the question: When is the numerical derivative obtained on the graphing calculator greater than the actual derivative, and when is it smaller? Discusses symmetric difference. (MKR)

Explores quadratic functions using the graphing calculator. Discoveries are made graphically whereas hypotheses are proven algebraically. Includes traditional quadratics, other algebraic quadratics, nonpolynomial quadratics, transcendental quadratics, and proofs. (MKR)

Presents a secondary classroom investigation into mathematical modeling techniques with the graphing calculator using a match stick puzzle. Geometric models, through their corresponding area formulas, are constructed, tested, and analyzed graphically to fit specified problem conditions. (Author/MKR)

Responses from 327 of 340 English secondary students identified the following 2 factors associated with preference for using/not using calculators: (1) degree of enjoyment of number work and confidence in calculation; and (2) degree of skepticism about the legitimacy of calculators or lack of confidence in using them. Primary schools had great…

Presents activities involving equal sharing, weighted averages, mean, median, mode, average cubes, and iterated averages, the last of which involves the use of a spreadsheet or graphing calculator. Includes reproducible student worksheets and questions for discussion. (MKR)

Many students have difficulties in interpreting position versus time graphs. Presents an activity involving calculator-based motion labs that allows students to bring these graphs to life by turning their own motion into a graph that can be analyzed, investigated, and interpreted in terms of how they actually moved. (ASK)

Investigates secondary mathematics teachers' use of the graphing calculator in their classrooms. Examines whether algebra teachers are currently using this technology in their classrooms, their perceptions toward the technology, and any changes in the curriculum or instructional practices. Indicates that the use of the graphing calculator is still…

Presents an activity in which students try to find the least common multiple (LCM) for two numbers using calculators. (ASK)

Presents the effects of a project focused on calculator use in middle grade mathematics and compares teachers' beliefs about calculator use before the project to their beliefs two years after participating in the project. Indicates that teachers did not significantly change their beliefs about calculators over time. Contains 23 references. (ASK)

Stresses the value of graphing and computer algebra systems calculators when teaching about waves. Discusses how to input data into these calculators. Highlights the Texas Instruments' (TI) Web site at http://www.ti.com. (YDS)

Presents six examples illustrating both the way in which the level of mathematical demand has been raised, and ways in which the response has sometimes been inadequate with the use of graphing calculator technology. (ASK)

Describes how the meaning of a tool was constructed by students and their teacher, and how students used the tool to construct mathematical meaning out of particular tasks through a qualitative classroom-based study. Suggests that the nature of the mathematical tasks and the role, knowledge, and beliefs of the teacher influenced the emergence of…