Approximating Pi with the Golden Ratio
Stacy L. Linn, David K. Neal
This article employs the Archimedean method of estimating the
value of pi within an inscribed pentagon. We show how to write these
approximations in terms of the golden ration. The article includes excercises
and solutions for better understanding.
Proofs That Students Can Do
Robert O. Stanton
This article discusses deductive reasoning and proof being an
essential part of mathematics. In this article it discusses and discribes
a powerful technique that can be used by
students to do proofs.. All examples come from areas of high school mathematics
outside geometry and proofs are listed for students to do.
Trigonometry Saves Engineer's Time
Sean D. Rule
This article outlines an engineering problem requiring the
use of a specialized trigonometric formula, and offers an answer to that
age-old classroom question, "When are we gonna have to use
this?" The article also includes
screenshots from the Geometer's Sketchpad.
Non-Geometry Mathematics and The Geometer's Sketchpad
Todd O. Moyer
xplorations using The Geometer's Sketchpad for algebra and
calculus content. Screenshots and examples are listed and discussed.
Grandfather Tang Goes to High School
Iris DeLoach Johnson
This article describes how the children's literature book,
Grandfather Tang's Story, which is commonly used in the elementary grades, may
be used at the high school level to engage students in an exploration of area
and perimeter which includes basic operations with square roots, ordering
numbers (decimal approximations, and their exact measurements in square roots).