http://www.ies.co.jp/math/java/calc/rotate/rotate.html

washers

washer movie, gif format

cylindrical shell movie, gif format

more cylindrical shell movies

more washer movies

cylindrical shells

finding volume using other types of sections.

pyramid

Extra Stuff not related to ch 6:

other calculus demos from mathdemos.org

Taylor's polynomial to approximate y = cos (x) near x = 0

Taylor's polynomial to approximate y = e^x near x = 0

Wolfram Alpha