We are excited to announce that pages written by Cathleen V. Sanders -- formerly available through the Punahou School website in Hawaii up until her retirement earlier this year -- are now hosted by the Math Forum.

The Geometry Pages

http://mathforum.org/~sanders/geometry/

The Geometry Pages are designed to intrigue and inspire you to learn more about geometry and its many applications in art, engineering, science, and much more!

 

Journey to the Center of a Triangle

http://mathforum.org/~sanders/centertriangle/

What is the center of a triangle? This question might be more complicated than you first think it is! During a three-day project, high school geometry students in Honolulu explore this question using interactive geometry software.

 

Connecting Geometry

http://mathforum.org/~sanders/connectinggeometry

Connecting Geometry will help you discover geometry and its many connections with the world, in science, art, navigation and architecture, through these web pages and the vast resources of the Internet.

 

MathArt Connections

http://mathforum.org/~sanders/mathart/

MathArt Connections is a class designed to introduce students to many interesting connections between mathematics, art, architecture and design. In this class, students will read the MathArt Connections web pages as a guide to learning the principles that connect mathematics and a variety of art forms.

Creative opening question for a lesson

http://mathforum.org/mathtools/discuss.html?&do=m&thread=__hsf_lesson__g-1

vms writes, "I have a task to write a creative lesson opener question for some lessons on the topics which don't seem to have much relevance to any Real Life or practical application....Any advice is appreciated."

 

Runners Activity: Some Observations

http://mathforum.org/mathtools/discuss.html?&do=m&thread=___disc_13171_g-16

Chris T. lists, "A few things I noticed and thought were interesting: 1. Position is used instead of distance. 2. There are no units for either time or position...."

 

Static graph versus Simulation Tool

http://mathforum.org/mathtools/discuss.html?&do=m&thread=___disc_13171_g-5

Mylla states, "The static graph is a good place to start the activity and analyze the data. The simulation tool would increase student interest, and give them immediate feedback of their ideas when presented with various situations."

http://www.mathgoodies.com/

Math Goodies is a free math help site that launched in 1998. It was a pioneer of interactive math instruction and free math homework help. Volunteer educators from around the world help students with specific math problems. Today this site has over 400 pages of activities for students, educators and parents.

The site is organized into these sections:

• Lessons
  For each volume of lessons there is a corresponding set of printable worksheets and crossword puzzles
• Homework
  Forums for students, teachers, and parents
• Worksheets
  Access pre-made worksheets, or create your own
• Newsletter
  Information about updates to mathgoodies.com, math news, and events
• Puzzles
  Interactive crossword puzzles (Java required)
• Articles and Tips
  Articles on math education and tips for parents