Math Topics

Lists of web sites categorized by subject areas within mathematics.

Trigonometry

1. Ask Dr. Math
   ENC Digital Dozen Site  
   Date: 2003 Grade(s): K - 12 Cost: Free ENC#: 003521
   This Internet site features a question and answer service for K-12 math students and their teachers. Visitors fill out a web form to send questions on mathematics related topics to Dr.
   (For more details, see ENC Record.)
   
   
2. Interactive mathematics
   ENC Digital Dozen Site  
   Date: 2003 Grade(s): 8 - Post-Sec. Cost: Free ENC#: 028744
   This Internet site is designed to help students learn mathematics by directly engaging them in a variety of lessons and tutorials that cover a broad range of topics in algebra and basic mathematics. Teachers may use these resources for classroom lectures.
   (For more details, see ENC Record.)
   
   
3. ALEKS, Assessment and Learning in Knowledge Spaces
   ENC Digital Dozen Site  
   Date: 2003 Grade(s): 6 - Post-Sec. Cost: $17.95 ENC#: 028743
   This Internet site provides an interactive one-on-one tutor for the assessment and learning of mathematical skills. The automated tutor is designed to help students work on the math concepts they are most ready to learn by assessing the individual student's current level of understanding of basic arithmetic concepts.
   (For more details, see ENC Record.)
   
   
4. 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.)
   
   
5. Trigonometry
   ENC Digital Dozen Site  
   Date: 2000 Grade(s): 10 - Post-Sec. Cost: Free ENC#: 029343
   This Internet site offers numerous manipulative applets designed to help students acquire an intuitive understanding of trigonometry functions through a visually-oriented approach. The site is part of the MANIPULA MATH COLLECTIONS series, which provides similar online resources for geometry, vectors, and calculus.
   (For more details, see ENC Record.)
   
   
6. Trigonometry, online video lessons
   ENC Digital Dozen Site  
   Date: 2000 Grade(s): 10 - Post-Sec. Cost: Free ENC#: 019306
   This World Wide Web (WWW) site features nine units of material typically found in a high school trigonometry course. Each unit contains a pretest with answers and multiple topical lessons.
   (For more details, see ENC Record.)
   
   
7. Zona Land
   ENC Digital Dozen Site  
   Date: 2001 Grade(s): 9 - Post-Sec. Cost: Free ENC#: 011839
   This World Wide Web (WWW) site, maintained by math and physics teacher Edward Zobel, is designed to be an educational and entertaining resource for students and teachers of high school physics and mathematics. All topics are presented in a visual, interactive format intended to help the student who has difficulty with the topics covered in a traditional presentation.
   (For more details, see ENC Record.)
   
   
8. 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.)
   
   
9. Dave's short trig course
   Featured in ENC Focus  
   Date: 1997 Grade(s): 10 - 12 Cost: Free ENC#: 018640
   This World Wide Web (WWW) site introduces trigonometry as computational geometry and offers explanations and illustrations of basic trigonometry concepts. The site, with interactive Applets, is designed for students who would like to learn a bit about trigonometry, or brush up on it; it is not offered as a full trig course.
   (For more details, see ENC Record.)
   
   
10. 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.)
    
    
11. 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.)
    
    
12. JavaSketchpad
    Date: 2003 Grade(s): 9 - 12 Cost: Free ENC#: 029299
    This web site provides 30 dynamic geometry illustrations created with JavaSketchpad. Users move sketches from the Geometer's Sketchpad software into Java applets that can be viewed with a web browser.
    (For more details, see ENC Record.)
    
    
13. Math homework help
    Date: 2004 Grade(s): 9 - Post-Sec. Cost: Free ENC#: 029282
    This Internet site offers solutions to algebra, trigonometry, precalculus, and calculus homework problems. Students may email or fax their problems to Math Homework Help and receive step-by-step solutions via email by the following day.
    (For more details, see ENC Record.)
    
    
14. Dancing in the night sky: an educator guide with activities in mathematics, science, and technology
    Date: 2003 Grade(s): 6 - 8 Cost: Free ENC#: 029642
    This Internet site provides educational support for a NASA CONNECT videotape. It includes review questions, hands-on activities, and links to extra resources on such topics as graphing, trigonometry, and the aurora borealis.
    (For more details, see ENC Record.)
    
    
15. S.O.S. mathematics
    Date: 2003 Grade(s): 9 - Post-Sec. Cost: Free ENC#: 011341
    This World Wide Web (WWW) site, a service of the Department of Mathematical Sciences at the University of Texas at El Paso (UTEP), is designed to help students do homework, prepare for tests, and get ready for math class. The site is organized by topic and contains lesson units that are in worksheet format.
    (For more details, see ENC Record.)
    
    
16. 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.)
    
    
17. 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.)
    
    
18. MathNerds
    Date: 2000 Grade(s): K - Post-Sec. Cost: Free ENC#: 018635
    This World Wide Web (WWW) site provides free, discovery based mathematical guidance via an international, volunteer network of mathematicians. MATHNERDS does not supply answers to homework or take tests; rather it provides hints, suggestions and references to help students understand and solve their mathematical problems.
    (For more details, see ENC Record.)
    
    
19. 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.)
    
    
20. 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.)