## Saturday, June 09, 2007

### List of online resources

The following URLs are taken from the book "Real Life Math: Everyday use of mathematical concepts" by Evan M. Glazer and John W. McConnell (2002). It is a book on real-life applications of math sorted in alphabetical order. Below are the links I have selected from the book after checking authenticity. Some links differ from the book as they were moved. Do take time to look through some of the topics, especially complex numbers where both teachers and students have a hard time coming up with examples of complex numbers in action. The website by British Columbia Institute of technology provides many interesting mathematical applications to technology.

 Topic Description Angles A study of angles of light in a diamond.Deals with reflection and refraction.Good for the topic of angles as well asreflection and refraction in physics. The mathematics of rainbows.Uses concepts of reflection and refraction as well. Instructions on how to throw a boomerangwith reference to angles and vectors. Asymptotes The basics of food cooling.Uses log function and exponential functions Coordinates Finding and plotting celestial coordinates Circles Arches in architecture Tree rings Another comprehensive site on tree rings Complex Numbers A forum page that discusses theuse of complex numbers in real life. Application of complex numbers in electric circuits Using complex numbers to generate fractals. Exponential Decay Carbon dating Exponential Growth Population growth. Savings and compound interest. The main site contains other The exponential spread of chain letters and scams The Charles Ponzi Scam Exponential growth of the Internet Pricing diamond rings Inflation calculator calculates the same amountof money you have in 2 different years.Calculates inflation between the years 1800 to 2006. Logarithms Ph Factor in Chemistry Ph chart Table of decibel levels Excellent list of applications in technicalareas of technology Matrices Cryptology and coding (Describe the benefits of this form ofcoding instead of direct substitution) Another website on cryptology andcoding using matrices Matrices in balancing chemical equations Various matrix related activities. Lesson plans included. Polar Coordinates A Programme can be downloaded to plot polar pictures Sun position in polar coordinates Polar coordinates in Robotics Polynomials A website that describes how tobuild boxes using rational and polynomial functions Polynomial equations in drag racing Quadratic Functions Science of cycling Investigating Fluid flow using algebraic equations Using equations to determinethe minimum surface area of a cylinder Rate, Ratio and Proportion Gear ratios of bicycles Ratios in musical scales Ratios in musical scales, tuning the piano. Proportion and ratio in cooking Eratosthenes using proportion toestimate the radius of the earth Proportion in medical imaging Exchange rates for international currencies Yerkes-Dodson law of Stress (Rate of change)