Texas A&M University
Texas A&m University: Moments of Inertia
This site is from the Math department of the Texas A&M University and contains wonderful information on Centers of mass and moments of inertia. Pictures, charts, graphs along with great text is all included.
University of Guelph
University of Guelph: Physics Tutorials: Moment of Inertia
This site has a list of moments of inertia for various objects.
Texas Instruments
Texas Instruments: Numb3 Rs: Irregular Polygon Centroids
Based off of the hit television show NUMB3RS, this lesson has students explore finding the centroid of an irregular polygon by finding the mean of the coordinates of the polygon's vertices. Further, students find the centroid given that...