Short articles describe the use of a lever to transfer energy between pucks on a frictionless surface, a demonstration of the principle of conservation of linear momentum, the construction of an inexpensive joulemeter, the design and construction of a simple logic demonstration board using integrated circuits, mounting of Geiger-counters to…

Short articles present ideas for demonstration equipment useful for the junior high school science: three-dimensional magnetic fields, model clocks, and smoke-ring puffers." (AL)

Short articles describe techniques suitable for junior high school science, including the construction of a night dial,'' an instrument developed in the sixteenth century for telling the time from the stars; a method of producing microphotographs, and a method of conceiving of weightlessness. (AL)

Original version of this article was designed as part of a series of school radio broadcasts titled Science Activities -- Outdoors and Indoors." (Editor/MB)

Describes four different styles of working exhibited by four different children as they worked with water flow. Each of the four children's approaches varied substantially, but each learned in his own way about water flow. The author believes that each child should be encouraged to follow his own style of learning. (BR)

Describes activities that can be done before and during the Solar Eclipse that is to occur on Saturday, March 7, 1970. Examples are: making a sun clock, charting the path of the sun, tracking the moon, predicting the eclipse, measuring the size of sun and moon, and observing the eclipse. (BR)

Aluminum foil, because of its characteristics, can be used for many elementary science activities: demonstrating Archimedes Principle, how to reduce cohesion, reflection and mirror effect, fuse action, condensation, friction, and as containers and barriers. (BR)

Original version of this article was designed as part of a series of school radio broadcasts titled Science Activities -- Outdoors and Indoors." (Editor/MB)