Shows the life cycle of the garden spider. Includes the spider making its web, trapping and paralyzing its victims and encasing them in cocoons.

Traces the various stages in the decay of U-238 to stable lead. Discusses alpha and beta emissions, the statistical nature of the process, and describes briefly other radioactive series.

Identifies the common types of nails and screws used in woodworking. Discusses the function and uses of hammers, nailsets and screwdrivers.

DISCUSSES SOME WAYS IN WHICH EDUCATIONAL MOTION PICTURES CAN CONTRIBUTE TO TEACHING. FILM CLIPS ILLUSTRATE VALUE IN PORTRAYING PHENOMENA INVISIBLE TO HUMAN EYE, AS WELL AS IN SHOWING SCENES OF HISTORICAL EVENTS.

Gives basic history of atomic theory and explains fission – it’s possible value for mankind and possible dangers.

Uniform circular motion is defined and demonstrated. Expression for magnitude of centripetal force is explained in general and illustrated in connection with a body whirling on a string, a car on a loop-the-loop, gravitational attraction and the motion of an electrically charged particle in a magnetic field.

Depicts techniques, materials and equipment developed in using aircraft for mosquito control. Indicates the kind of situation in which such control may economically and feasibly be applied.

French film about a French family who live in primitive surroundings, go to school, etc. “Gosh those French people live in caves.” Ladies are big-boned and have a mouth full of teeth. Wooden shoes too!

Illustrates the city’s origin, its rise to power and wealth through trade, its decline with the coming of new trade routes and its survival as a thriving and impressive city through adaptation to new conditions. Uses animation and photography to explain the unusual location of Venice, which is built on islands. The origin of the [...]