Angles in plants, animals, buildings, cars and body movements are shown. Slope is defined and illustrated. This is a link to a 3149K quicktime movie. The purpose of these lessons is to develop an appreciation and understanding of the triangle as a foundation for construction and a tool of measurement. Important properties of triangles are presented while the uses of triangles are illustrated.
Tangent is introduced.
Similarity and fractals are discussed in the print materials and mentioned briefly in the video. This is a link to a 2004K quicktime movie. The purpose of these lessons is to gain skill in using quadrilaterals to represent the physical world and in describing and classifying various quadrilaterals based on their properties. Many of the things we have constructed in this world are four-sided figures called quadrilaterals. Viewers are challenged to question why so many shapes are quadrilaterals.