• hear a recording done on a wax cylinder; see the machine (
http://video.google.ca/videoplay?docid=7674917925194039795&ei=ag6LS96tAZ-6qwLUsOW7Aw&q=wa...
)
• video animation
• discusses the volumes of pyramids, cones, and spheres compared to that of a related prism (
http://www.glencoe.com/sites/texas/student/mathematics/assets/animation/prealgebra/PREALG...
)
Page 90 Video that describes the cell phone development by Motorola
• history of the development of the cell phone since the 1930s
• Click play ► to watch the video. (
http://www.motorola.com/content.jsp?globalObjectId=7662-10813
)
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