Browse Items (37 total)

Shows the path of a river from its source to its mouth to present the varied environment through which a river flows. Pictures electrical generating plants, water treatment plants, barges, locks, and dams to show how man uses the river for power,…

Presents many kinds of bulletin board--how they are constructed and how they can be used. Shows boards made of wallboard, cork, metal, screen, ropes, and peg boards. Demonstrates the use of golf tees hangers, and strings on peg boards. Illustrates…

Shows the external anatomy of a living crayfish and using a freshly anesthetized specimen points out its internal anatomy by systems. Presents its hard exoskeleton, body divisions, and the jointed nature of its appendages. The exoskeleton is removed…

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, sol, precipitation,…

Shows a skilled ceramist applying designs on several ceramic pieces prior to final firing. He uses the clay itself, a comb, a piece of burlap, or clay stamps to create textured designs. Other decoration methods illustrated include colored glazes,…

Develops basic concepts of electrical distribution, both cross-country and within the home. Complete distribution system is explained, with demonstrations of "line loss" and the use of fuses for overload protection. Reviews parallel and series…

Uses live and freshly anesthetized earthworms to point out external features, action of the muscular system, the internal organs, and the reproductive process. The five aortic arches are seen in action and the process of digestion is followed as…

Develops an understanding of the four basic requirements for a controlled experiment. Presents a series of experiments designed to answer the question "Do seeds need water to sprout into plants?" Encourages viewer participation by inserting…

Defines exposure in terms of light intensity, time, film, latitude, and the brightness range of the subject matter. Using a table-top set, shows determination of exposure using a photoelectric exposure meter. Shows the setting of the diaphragm and…

Presents the proper methods for dissection of the frog in order to observe its anatomy. Indicates the structures which can be observed by opening the mouth. Depicts proper incisions to make in order to lay skin and muscle layers aside and how to tie…