Jenny is a Good Thing (1969)

We had quite a few of these social awareness documentaries in the UK in the 1960s that extolled the virtues of education, collaboration and fun whilst bringing home a more serious point to the adults watching about ensuring children eat properly. On that note, it also looks at the more cerebral forms of "nutrition" too. Not just teaching you to fry an egg or prepare a salad, but of the values to people of playing with each other, with interacting and enjoying that sense of society. This is built around an American educational programme called "Head Start" and attempts to show us just a little of the whole food procurement process through the eyes of children who know how to enjoy themselves and are always peckish. I could probably have done without the distracting soundtrack, but otherwise it's quite an interesting look at what we all ate back then, and what we thought constituted a "balanced diet"!