Liverwort: Alternation Of Generations (1974)
Close-up and time-lapse photography enables us to examine the liverwort, Marchantia, a standard example of alternation of generations. The role
North American Regions: The Central Lowlands (1967)
Points out that the Central Lowlands produce more automobiles, farm machinery, and industrial and electrical equipment, and grow more corn
The Human Body: Sense Organs (1965)
Shows the different types of sensory receptors and how they function. We digitized and uploaded this film from the A/V Geeks
Viruses: Threshold Of Life (1967)
With the electron microscope, tissue cultures and advanced experimental procedures, explores the nature of viruses, their structure and behavior and
Acids Bases And Salts (1959)
Surveys the early theories of Arrhenius and later theories f Brensted, Lowry, and Lewis. Uses the Arrhenius or classical definition
Adaptation Of Plants And Animals (1957)
Illustrates the adaptations of living things to environment, for food-getting, and for protection. Observes a variety of plants and animals
Airplanes: Principles Of Flight (1960)
Animation and actual in-flight photography demonstrate the aerodynamic principles of flight. Explains that the principles which govern movement of a
Birds And Their Characteristics (1961)
Shows the characteristics which differentiate birds from the other groups of vertebrates. Common features, adaptations and special characteristics of several
Birds That Migrate (1968)
Twenty-seven species of birds illustrate the use of the four great migratory flyways across North America and the difficulties encountered. We
A busy day at the country fair (1963)
Follows the members of a family at the country fair as they view the exhibits of fruits, vegetables, flowers, handicrafts,
China: The Land and The People (1955)
Discusses the similarities and differences in climate, in topography, and in crops of North and South China. Explains that the
English History: Nineteenth Century Reforms (1959)
Explains that evolution, rather than revolution, was characteristic of English political reform in the 19th century. Covers the period between