41. 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.

42. "It's the humidity" (13:04)

Date:
1962
Summary:
Uses common everyday examples of the effects of humidity to introduce and explain this idea. Shows Kay, an attractive teenager, and her adventures with a violin, a stuck drawer, and drying off at the pool as these processes are influenced by the humidity. Animates an explanation of dew, relative humidity, and dew point. Shows and explains several weather instruments for measuring humidity.

43. 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.

44. Gases and how they combine (22:01)

Date:
1962
Summary:
Shows some properties that distinguish gases. The volume of ammonia and hydrogen chloride that combine are measured quantitatively, and simple integer volume ratios are measured for the combinations of hydrogen and chlorine. Interprets these simple integer ratios in terms of Avogadro's hypothesis.

45. How machines help us (13:02)

Date:
1962
Summary:
Introduces basic principles of the lever, wheel and axle, pulley, inclined plane, wedge, and screw, and shows common usage of each. Shows the crowbar as a lever, and shows a doorknob as an example of a wheel and axle. Pictures the raising of the flag to illustrate the use of a pulley. Shows stairs as an example of an inclined plane, pictures carpenters driving nails as wedges, and presents the operation of an auto jack as an example of a screw.

46. Introduction to Music Reading (11:52)

Date:
1962
Summary:
Uses animation to compare written music symbols with written words and emphasizes that music is a written language with its own symbols. Introduces the five-line staff and the G clef as the basic structures upon which music is written. Shows how to develop pitch memory, introduces a basic rhythmic and tonal vocabulary, and combines these vocabularies into songs.

47. Readiness... The Fourth R (19:23)

Date:
1962
Summary:
Presents physical education as an essential part of the modern school curriculum. John Glenn explains why the astronauts need to be ready physically and mentally for space travel. Describes how body motor skills are developed in early grades by tumbling, rope climbing, and rhythms. Pictures older students playing team games, as basketball and volleyball. Stresses the need for well-planned activities, accurate records, and competent, well-trained teachers.

48. The Chicago Picasso (32:17)

Date:
1962
Summary:
Traces the story of the "Chicago Picasso." Relates the artist's original conception of the Chicago sculpture, the people and processes involved in the fabrication, and finally the construction of the statue by a steel erection company. Visits the first major exhibit of the Picasso sculpture.

49. 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.

50. 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.