University of Maryland
University of Maryland: Line Integrals and Conservative Vector Fields
This resource explains line integrals in relation to conservative vector fields. It contains example problems with solutions and additional problems to work.
University of British Columbia
Living Mathematics Project: The Flow of Vector Fields
This site provides an interactive graphic representation of the flow of vectors under different coordinates.
University of California
Ucla: Conservative Vector Field
This site solves an example problem to show if the function F(x,y) =