Math Topics

Use math topic words to find web sites with lesson plans and activities.

Trigonometry

1. The noon day project: measuring the circumference of the Earth
   Featured in ENC Focus   ENC Digital Dozen Site  
   Date: 2000 Grade(s): 5 - 12 Cost: Free ENC#: 018207
   This World Wide Web (WWW) site presents all the necessary mathematics and science information to enable teachers of grades 5 to 12 to recreate the measurement of the circumference of the earth as done by the Greek librarian Eratosthenes over 2000 years ago. Shadow measurements taken at high noon local time on a designated day in March are posted online and used to calculate the circumference of the earth.
   (For more details, see ENC Record.)
   
   
2. Manipula math with JAVA
   Featured in ENC Focus   ENC Digital Dozen Site  
   Date: 1996 Grade(s): 5 - Post-Sec. Cost: Free ENC#: 011230
   This Internet site, developed and maintained by International Education Software (IES Inc.), uses interactive animation to explore an extensive set of sophisticated mathematical concepts. The web site is designed for middle school geometry students, high school students, college students and all who are interested in math.
   (For more details, see ENC Record.)
   
   
3. Circles of light: the mathematics of rainbows
   ENC Digital Dozen Site  
   Date: 1995 Grade(s): 11 - 12 Cost: Free ENC#: 000755
   This World Wide Web (WWW) site contains a laboratory experiment to determine how and why rainbows are formed. This lab helps to answer these and other questions by examining a mathematical model of light passing through a droplet of water.
   (For more details, see ENC Record.)
   
   
4. AP calculus: Alvirne High School
   ENC Digital Dozen Site  
   Date: 1995 Grade(s): 11 - 12 Cost: Free ENC#: 001880
   This World Wide Web (WWW) site, updated only during the school year, provides advanced placement (AP) calculus students the opportunity to solve another AP students and/or a guest mathematics aficionados problem each week and to submit the solution. Furthermore, students can ask questions and propose problems; submitted problems must be accompanied by a detailed solution.
   (For more details, see ENC Record.)
   
   
5. The unit cylinder
   Date: 2002 Grade(s): 10 - Post-Sec. Cost: Free ENC#: 028668
   This web site describes how teachers can introduce the basic trigonometric function graphs by using a cylinder instead of the unit circle. It suggests constructing a cylinder with unit radius from a sheet of transparency material.
   (For more details, see ENC Record.)
   
   
6. The math page
   Date: 2001 Grade(s): 6 - Post-Sec. Cost: Free ENC#: 019957
   This World Wide Web (WWW) site is designed to help students understand arithmetic and trigonometry and practice examples of common questions that are asked in both of these subjects. This site is maintained by Lawrence Spector of the Borough of Manhattan Community College of The City University of New York.
   (For more details, see ENC Record.)
   
   
7. The noon observation project
   Date: 1996 Grade(s): K - 12 Cost: Free ENC#: 008584
   This World Wide Web (WWW) site is intended to encourage students and teachers to use electronic networks to enhance learning. The purpose of this project is to use simple measurements and calculations to determine the circumference of the earth.
   (For more details, see ENC Record.)
   
   
8. Frequently asked questions about Trigonometry
   Date: 1996 Grade(s): 10 - 12 Cost: Free ENC#: 012138
   This World Wide Web (WWW) site offers trigonometry students an interactive format for investigating introductory concepts involving sine, cosine, and tangent. In experiment boxes contained in the readings, students experiment with creating angles by virtually dragging a stick that casts a shadow.
   (For more details, see ENC Record.)