This description features a set of lively demonstrations and observations, including some group work, that illustrate features of Earth science such as the Earth's rotation, ocean currents, the formation and erosion of rocks, earthquakes and volcanoes. All were shown in a one-hour presentation to teachers and can readily be used in schools,…

Describes experiments involving variations on the electroscope, an electrostatic toy, a stationary wave machine, a spark counter, a carbon microphone, curvilinear expansion, soap films, a barber's pole, and a simple pendulum. (GS)

Ten laboratory exercises on optics are described to clarify concepts involving point objects and converging lenses producing real images. Mathematical treatment is kept to a minimum to stress concepts involved. (PS)

Presents experiments, demonstrations, activities and ideas relating to various fields of biology to be used in biology courses in secondary schools. Among those experiments presented are demonstrating the early stages of ferns and mosses and simple culture methods for fern prothalli. (HM)

Presents experiments, demonstration, activities and ideas relating to various fields of physics to be used in physics courses in secondary schools. The use of a programable pocket calculator in A-level physics courses is among the activities described. (HM)

Describes a science syllabus for secondary school girls who think science irrelevant. Included are units such as Food, What It Is, And Why We Need It,'' What Happens to Our Food,'; Some Foods We Prepare,'' Keeping the Home Clean,'' How to Keep Healthy,'' and Future Trends in Food.'' (PS)

Some helpful ideas are proposed for use by biology teachers. Topics included are Food Webs,'' Key to Identification of Families,'' Viruses,'' Sieve Tube,'' Woodlice,'' Ecology of Oak Leaf Roller Moth,'' and Model Making.'' (PS)

Twelve ideas are presented for physics teachers to implement in the laboratory or classroom. Topics covered include electromagnetic induction, microbalance, capacitors, determination of light velocity, and the compound pendulum. Information regarding laboratory equipment is also provided. (PS)

Six new experiments are described for use in elementary school classrooms. Phenomena explored include friction, mass of air, kinetic energy, air condensers, and hot-air balloons. Instructions are explicit. (PS)

Describes the technique and benefits of having physics students practice connecting paper models of electric circuits before attempting to use real ones. (WRM)

Describes a reaction rate experiment in which the manipulative skills needed are minimal and the measure of reaction rate is direct and understandable. (Author/GS)

Explains why sucrose does not reduce Fehling's or Benedict's solution while maltose, fructose and glucose do. (LS)

Describes a technique for isolating slime molds from tree bark and outlines projects for working with slime molds in the laboratory. Diagrams of 26 of the more common British species and a key to the Orders of Myxomcetes are given. (CS)

Discusses the difficulty of explaining the concept of entropy, and provides exercises, experiments, and discussions concerning entropy. (MLH)