Here is a site that clearly and thoroughly explains the equation of a line, including how to find points on a line, intercepts, and how to recognize the equation of a line. There are example problems solved, problems for the student to attempt, with answers available.
This site offers the formula and an example of finding the length of an arc. The site also supplies a picture of what an arc is in a circle with links to related words.
This MathWords.com site lists the equations for all of the trigonometric identities.
This site defines reflection, separates reflection into two categories of amphichiral and chiral. The site also gives formulas used in reflective symmetry including point-plane distance, position of reflected points and has links to related sites.
A site showing the structures of water and ice and explaining how they are affected by hydrogen bonds. Includes a movie animating hydrogen bond formation and disruption.
A career as a Mathematician is profiled.Includes: Mathematician overview, Preparation, Day In The Life, Earnings, Employment, Career Path Forecast, Professional Organizations.
The University of St. Andrews allows you to link to many famous mathematicians and mathematical events from Babylonian mathematics in 2000 B.C. to mathematical discoveries in the 20th Century.
The mathematics associated with the motion of satellites is described. Equations (for period, velocity, acceleration and force) are stated, symbols described, and sample problems solved. Includes five practice problems with solutions and answers. Excellent graphics.
Exhibition of photographic portraits taken by Civil War-era photographer Mathew Brady, who made portraits of many illustrious Americans on both sides of the conflict before, during, and after the war. Includes an animated explanation of how photographs were made during Brady's lifetime, a biographical note, and dozens of examples of Brady's work that confirm his status as a photographic and photojournalistic pioneer.
Learn about the "two main 'slices' of a circle" called a sector and a segment, and see how you can calculate the area of a sector or segment using trigonometry.
What is rounding, and what does it mean to round up and round down? Learn how to round numbers via simple steps and examples.
A definition of skip counting followed by interactive examples and links to exercises that will help your skip-counting skills. Learn to skip count by 2, by 3, by 4, by 5, and by 10, and challenge yourself with backwards skip counting.
Simple word problems challenge your subtraction skills. If you get stuck, use the clues and the number line for help.
An excellent place to test your ability to recognize the graphs of sine and cosine and their various associated forms. A Java applet is also included to plot your own function.
This Computer Algebra System (CAS) activity encourages students to investigate addition, subtraction, and multiplication of matrices. They find the inverse of a matrix. Students also solve a set of linear equations by using matrices.
In this activity, students learn to create and edit a matrix using the matrix editor. They use various features in the calculator to perform elementary row operations and convert a matrix to its reduced row echelon form. Finally they verify important results and solve a variety of problems in matrix theory and linear algebra.
This StudyCard set is a teaching activity that uses real-world contexts to assist students in understanding the concepts of maximum, minimum, increasing, and decreasing.
This site contains the full text of an interview with Maya Angelou by David Frost.
This site offers two ideas for lessons/activities for students during "Get Caught Reading" month. It was taken from ReadWriteThink's calendar on May 1, 2007, and includes activities, web links, and a bibliography.
This site provides a detailed overview of Alzheimer's Disease. Content explores signs and symptoms, causes, risk factors, screening and diagnosis, treatment options, and much more.