The Greek mathematician Eratosthenes estimates the circumference of the earth.

A portrayal of the Mexican Day of the Dead consisting of still shots and narration. Deals with the special objects and events surrounding the annual Mexican celebration of “All Souls Day”. It is not only a rich flood of folk art, but a view of the way that the Mexicans have come to terms with death. Searched out with the help of Alexander Girard and a moving guitar score by Laurindo Almeida.

Presented without voiceover, various kinds of breads are displayed and broken in a joyous celebration of starch, seed and salt.

A Rough Sketch features a linear view of our universe from the human scale to the sea of galaxies, then directly down to the nucleus of a carbon atom. With images, narration, and a dashboard, it gives a clue to the relative size of things and what it means to add another zero to any number. The 1977 film, Powers of Ten, was an expanded and updated version of this 1968 study film. Charles and Ray often gave projects long titles to indicate that they were still exploring their ideas—that the presentation was a model or a type of “sketch.”

The concept of a mathematical function is illustrated as used in science.

A scientific film essay, narrated by Phil Morrison. A set of pictures of two picnickers in a park, with the area of each frame one-tenth the size of the one before. Starting from a view of the entire known universe, the camera gradually zooms in until we are viewing the subatomic particles on a man's hand.