Described is a physics course developed for seventh grade students. Emphasis is placed on developing basic skills and, as part of this objective, students construct their own scientific equipment. A sample lesson illustrates the methods and objectives used for this course. (JP)

Discusses a simplified Millikan oil-drop experiment which emphasizes the enplanation of basic concepts in mechanics and electrostatics, the use of home-made apparatus, the request for an individual's observation of his own drop, and the application of statistical analysis in data interpretation. (CC)

Describes several experiments, suitable for secondary school biology classes, using the bioluminescent marine bacterium, Achromobacter fischeri. (JR)

Discusses the development of a one-year laboratory course in an effort to provide a link between traditional laboratories devoted to a single area of chemistry and the total involvement of a single narrow research project. Included are outlines of 32-hour lectures and 11 experiments performed in the integrated course. (CC)

Describes demonstrations suitable for secondary school biology classes relating to the effects of the hormone IAA on plant growth. Demonstrations illustrate how hormone treatments affect stem elongation, callus formation, inhibition of axillary buds, stimulation of secondary growth and initiation of adventitious root development, root elongation,…

A number of suggestions are made for changing the full, sterile environment of a biology laboratory into one which is lively and motivating to students. (JR)

Discusses a program, consisting of individual conventional experiments and group special projects, along with lectures in analytical courses during the last six to eight weeks of a semester. Concludes that students' different aspects of capability are encouraged after receiving the course. (CC)

Discusses procedures of using the selective absorption properties of manganese dioxide to prepare a short-lived source from the cerium-144/praseodymium-144 system. (CC)