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Volume 4, Number 21

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24 May 1999                                        Vol. 4, No. 21


Kunkel's Math Lessons | Field Guide to Functions - OSU |
Calendars - Math Library KUNKEL'S MATHEMATICS LESSONS - Paul Kunkel Kunkel's Geometer's Sketchpad lessons aim to convey a conceptual understanding, usually without rigorous proof, with questions and suggestions for extensions. They include: - Buffon's Needle - an old probability exercise - Chinese Handcuffs - questions with applications for geometry, trigonometry, and probability - Hanging with Galileo - an investigation into the catenary - Reuleaux Triangle - a figure that is not a circle, but has constant width - Rungs and Vineyards - visual effects seen from a moving automobile - Sketchpad Ellipses - investigating ellipses by tracing triangle transformations An annotated gallery of sketches, without commentary, for Physics, Calculus, and other miscellaneous topics is also provided: Lessons without GSP sketches include: - Dodecahedron Measures - dihedral angle and volume - Planimeter - a drafting instrument used to measure area - Table Patterns - modular multiplication - Volume of a Torus - with a virtual reality drawing -|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|- FIELD GUIDE TO FUNCTIONS - Oregon State University (OSU) A review and reference for the functions commonly encountered in single-variable calculus, discussing the significance, basic notation, and properties of each function. Examples of calculations are on following pages, with exercises for each topic: linear, polynomial, power, rational, exponential, logarithmic, trigonometric, and piecewise functions. Also included are algebraic operations on functions, function composition, and general types of functions. This field guide is designed to support William A. Bogley and Robby Robson's CalculusQuest, the first in a standard sequence of University of Oregon calculus courses: -|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|- CALENDARS - Internet Mathematics Library Browse the Math Forum's collection of sites on calendars, dates, and time, to find lesson plans and articles on calendars from around the world. Highlights include: - The Aztec Calendar - Rene Voorburg historical information and illustrations of the two independent systems comprising the Aztec calendar - Calendar Quirks - Ivars Peterson (MathTrek) an article about our efforts to create frameworks that allow us to reckon time over extended periods - Calendars - L. E. Doggett an introduction to calendars: what they are; astronomical bases of calendars; calendar reform and accuracy; historical eras and chronology; and more - Day Of The Week Of Any Date - Jim Loy how to figure the day of the week for any date - The Maya Calendar -|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|-\-/-|- CHECK OUT OUR WEB SITE: The Math Forum Ask Dr. Math Problems of the Week Mathematics Library Teacher2Teacher Discussion Groups Join the Math Forum Send comments to the Math Forum Internet Newsletter editors _o \o_ __| \ / |__ o _ o/ \o/ __|- __/ \__/o \o | o/ o/__/ /\ /| | \ \ / \ / \ /o\ / \ / \ / | / \ / \

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