The purpose of this lesson is to discuss the presence of geometry in the world around us. This will help the students realize that geometry has been a discovery not an invention.
Procedures Review the different shapes of webs which spiders make.
Take a closer look at an orb spider and its web. Look at an example of an orb spider's web. Discuss the terminology looking at the sample web. Discuss the basic properties which make the spiral logarithmic The angles formed by tangents drawn at the points where the spiral intersects the radii are congruent. That makes the spiral equiangular.