Discusses the change in pressure as a balloon expands. Describes the pressure change in a spherical soap bubble and a rubber membrane on the tube. Provides demonstrations when two balloons are connected by a tube. Lists five further reading materials. (YP)

Presents an investigative sequence of experiments addressed to the topic of photosynthesis. (BR)

Presents ideas on how common household light bulbs can be used to develop interest in learning physics. Focuses on supermarket data taking and analyses, filament temperatures, detective work with three-way bulbs, and lifetime statistics. (YP)

This book, addressed to students for their independent use as well as to teachers as a supplement to the standard texts, contains nearly 100 practical science experiments that cover a wide range of subjects at different grade and ability levels. It is designed to involve students in active scientific experimentation, demonstrations, and projects…

Explains the techniques of experimenting with the protozoan Colpoda cucullus to learn about its habitats, dispersal and adaptations. (LS)

Introduces a range of simple ideas about soil physical properties using a minimum of apparatus. (MKR)

Described is the life cycle of the cellular slime molds Acrasiales. Experiments that can be used to explore the aggregation, migration, and culmination activities of the organism are suggested. Laboratory procedures for culturing these slime molds and listings of biological supply houses and literature references are also given. (MA)

Describes an activity involving a transparent water filled box and a plane mirror in which the refraction of light rays is demonstrated. (CP)

Presents a flowchart that is used in the elementary qualitative analysis of a single salt. (GS)

Describes a lighted demonstration apparatus for representing the distribution of electrons, protons and neutrons in an atom. Also includes experiments with ice, forces, microscopes, spectra, and geological modeling. (CS)

Describes demonstrations used by the nineteenth century physicists to determine if two bodies oscillating at the same acoustic frequency were in phase. (GA)

This teaching module was developed by the project "Recent Developments in Science and Technology with Applications for Secondary Science Teaching." Premises about students and their learning and generalizations about content are described. Chapters included are: (1) "Introduction"; (2) "Monomers into Polymers"; (3) "Natural Polymers"; (4)…

Describes the use of biofeedback machines in biology classes which provide students with an awareness of their own brain waves and as a device to demonstrate the fact that the body responds readily to the mind. (BR)

Presents an alternative series of investigations replacing the propanone-trichloromethane system (Topic 10) in the Nuffield A-Level course. A trichloromethane-ethyl ethanoate (acetate) system presented in four experiments give good results and removed the dangers arising from the other system. Topic 10 need not be re-written, just the replacement…