1. Journey to the center of a triangle (08:57)

Date:
1976
Main contributors:
Bruce Cornwell, Katharine Cornwell
Summary:
Animation and a musical background are used to locate incenters, circumcenters, centroids, and orthocenters in a number of triangles. The film was created on the Tektronics 4051 Graphics Terminal.

2. Development of our decimal numeration system (27:26)

Date:
1965
Main contributors:
Joseph Moray, National Council of Teachers of Mathematics, John M. Davidson, Richard Gilbert, Arthur M. Kaye, Shirley Tebbe, Francesca Greene, Peter Smith, Carole Eickhoff, Davidson Films
Summary:
Delineates interesting facets of the development of our decimal system. Compares the additive, subtractive, multiplicative, and positional notation aspects of the Chinese, Babylonian, Egyptian, and Hindu-Arabic systems. Uses models to explain concepts which lead to greater understanding of base 10 systems. This film traces the historical development of our present decimal system--the Hindu-Arabic system of numeration. The meaning and importance of base ten, place value, grouping, numerals, and expanded notation are carefully described.

3. The department of health, education and welfare (14:36)

Date:
1963
Main contributors:
Erling M. Hunt, Wade Arnold, Abraham Ribicoff, Center for Mass Communication, Columbia University Press
Summary:
Discusses the purposes and functions of the five major divisions within the department of Health, Education, and Welfare. Describes the several offices, agencies, and bureaus, and indicates how these deal with foods, drugs, social security, vocational rehabilitation, and education. Emphasizes that the major concern of the department is to benefit individuals in their living. Narrated by Abraham Ribicoff, a former secretary of the Department of Health, Education, and Welfare.

4. The dynamics of the circle (14:20)

Date:
1963
Main contributors:
Mannis Charosh, Pelican Films
Summary:
Describes a geometric circle and defines and illustrates such terms as radius, congruent circles, chord, diameter, major and minor arcs, semicircles, and central angle. Shows the relationship between a central angle and its arc; presents methods for proving arcs equal in degrees and length; and describes the relationships of a diameter, a chord, and its intersected arcs.

6. Dynamics of solution (14:57)

Date:
1962
Main contributors:
Ellis Katzman, Elbert C. Weaver, John A. Skarulis, William H. Pasfield, Ross Lowell, Herman J. Engel, Robert Braverman, Peter Robinson, Geraldine Lerner, Max J. Rosenberg, Fisher Scientific Company
Summary:
Demonstrates the differences between saturated, unsaturated, and supersaturated solutions; that solutions are dynamic, not static in character; and also shows suspensions and colloidal dispersions. Presents characteristics of solutions and explains insolubility, solutions without chemical reactions, mixtures, suspensions, and the Tyndall effect in colloidal dispersions.

7. The dairy belt (1:07:31)

Date:
1962
Main contributors:
Thomas F. Barton, Daisy M. Jones, Roger Niemeyer, James W. Taylor, Indiana University Audio-Visual Center
Summary:
Compares two dairy farms--one in Southeastern Wisconsin and the other in Central New York State. Shows the land use and cultural practices which reflect adaptation to such elements of the physical environment as topography, soil, precipitation, temperature, and length of growing season. Describes such man-made conditions that influence the marketing of milk as the proximity of farms to urban areas, sanitation requirements, and transportation and refrigeration facilities.

8. Durer and the Renaissance (13:55)

Date:
1961
Main contributors:
Beatrice Farwell, Paul Falkenberg
Summary:
Discusses the life of Durer and the pivotal point he represented in connecting the artistic development of Italy and Northern Europe. Presents examples of his work that show his passage from the Middle Ages to the Renaissance. Develops the idea that through a study of his work the fusing of his Gothic inheritance and the organic Renaissance can be observed.

9. Dance : a reflection of our times (29:37)

Date:
1960
Summary:
Discusses the use of the dance as a social commentary and relates it to the critical statements of artists in other fields. Presents a performance of "Caprichos" based on Goya's etchings of man's weaknesses. In contrast, an excerpt from Paeon is performed. Features choreographer Herbert Ross and his troupe.

10. Collision stations (29:45)

Date:
1959
Summary:
What happens when a rocket ship in space is struck and damaged by a meteor? Capt. Gell, a Navy expert on crew equipment, demonstrates the Navy’s full-pressure space suit for emergency escape from a shattered craft. Dr. Haber, an aerodynamic engineer who has made a thorough study of the theoretical problems of escape and survival far out in pace, explains the difficulty of making an individual descent into the atmosphere, on one hand, and of rescuing the stranded flyer in space, on the other. Dr. Herbert’s recommendation: the crew should ride the damaged vehicle back to earth --if anything remains of it.