Defines learning and memory and presents experimental evidence that indicates that learning and memory are chemical in nature. (JR)

Presents a brief historical account of Michelson's invention of his interferometer with some subsequent ingenious applications of its capabilities for precise measurement discussed in details, including the experiment on detrmination of the diameters for heavenly bodies. (CC)

Describes a course at Michigan State University in which students carry out self-experiments in nutrition. Self-experiments help to impress students with importance of human nutrition and offer insights into problems associated with altered dietary patterns. A number of possible self-experiments in nutrition are listed. (JR)

Discusses the use of two television sets with UHF coverage and a window screen or aluminum foil reflector to conduct a take-home experiment in physics. (CC)

Describes experiments that can be carried out by freshmen in general science courses. All experiments are prepared with inexpensive equipment and materials. Quantitative data are analyzed intuitively using graphical representations. (JP)

Discusses the controversy about the discovery of element 72, involving Urbain's isolation of celtium, Dauvillier's reexamination of celtium samples, and Coster and Hevesy's announcement of the existence of hafnium. Indicates that the Copenhagen workers are finally accredited for the element discovery in their x-ray spectral studies. (CC)

Discusses the importance of children developing personal associations with animals, and suggests that it is the responsibility of schools to teach students how to properly care for pets. With particular reference to Canadian experiences, criticizes the widespread neglect of pets and misuse of animals in school laboratories and science fairs. (JR)

Describes a laboratory method suitable for senior high school classes for investigating possible mechanisms of catalytic function. The Harcourt-Essen reaction is used to demonstrate a catalytic process that can be investigated quantitatively by standard kinetic methods. (JR)

Suggests that the Friedel-Crafts reaction, used for synthesizing a wide range of aromatic compounds, is an ideal vehicle for extended senior high school project work in chemistry. Provides a theoretical discussion of the reaction, suggests a number of suitable investigations, and outlines the experimental details. (JR)

The use of 10cc. syringes in high school chemistry experiments can reduce the expense of equipment and lead to imaginative experimental designs. Describes the equipment and experimental procedures for four experiments utilizing syringes. (JR)

Describes some of the causes and consequences of particulate air pollution. Outlines the experimental procedures for measuring the amount of particulate materials that settles from the air and for observing the nature of particulate air pollution. (JR)

Describes methods using basic trigonometry which enable secondary earth science students to make astronomical calculations. The literature and mathematics available to high school students allow calculation of the earth's dimensions, which in turn permit calculation of the sun's distance. Once the sun's distance is known, stellar distances can be…