Prez on the basic functions and sources of the main nutrients required for health: http://prezi.com/icxys57d5mhn/introduction-to-nutrition/
Source: http://prezi.com/icxys57d5mhn/introduction-to-nutrition/
Note - American (Australia includes Dietary Fibre)
Source: http://www.youtube.com/watch?v=BnoHbd-9lGY
Source: http://www.youtube.com/watch?v=A7jKCfx-0Mo&feature=related