Browse Items (142 total)

Presents the case histories of three county-wide recreation programs as observed by an interested group. Outlines the various arrangements of financing a recreation program, shows the many reasons why trained leadership is necessary, discusses the…

Shows a skilled ceramist demonstrating the step-by-step process of making simple molds of three types: slipcasting, drape, and press molds. Portrays the process from pattern-making to the completed object, and explains the steps at each stage.

Demonstrates three slab methods of pottery-making. Shows wedging, forming a candleholder directly from a lump of clay, rolling a slab for a simple tile, and constructing a flower container from several pieces of clay. Emphasizes the correct use of…

A skilled potter demonstrates the shaping of various pieces of pottery on a potter's wheel. Shows each step in making a bowl and special steps in completing a low, flat plate and a pitcher.

Studies a green alga Volvox carteri f. nagariensis as a basis for understanding the growth and differentiation of other organisms. Focuses on the developmental stages of male, female, and asexual embryos. Separates gonidia from the parent spheroids…

Studies the early stages of the development of the axolotl, an aquatic salamander, with emphasis upon genetically determined characteristics. Mates two wild-type, dark axolotls, each heterozygous for white and albino mutations. Uses time-lapse…

Traces heart development in the early chick embryo, showing the primitive streak stage, heart-forming cells in the blastoderm, development and fusion of paired endocardial tubes and of the epimyocardium, gut closure, and later development of the…

Utilizes the living chick embryo and perspective drawings to show the early development of the amnion, chorion, yolk sac, and allantois. Examines the contractions of the amnion, as well as the folds and blood vessels of the yolk sac and its…

Shows the variety of ways animals obtain food and their different types of digestive cavities--fully closed, one opening, and two openings. Examines digestive organs in an earthworm, grasshopper, frog, cat, and bird. Looks at peristalsis in a dog's…

A dramatization which compares responsible drinking with alcohol abuse. Intermixed with scenes from a party, a male and female participant each present facts about alcohol consumption and its effect on physical and mental functioning. Contrasts the…