Two computer packages are described which augment laboratory experiments in which the effect of random variables on population processes can be explored. (MP)

Two papers are reported on, one dealing with a course on inorganic reaction mechanisms for college seniors, and the other on the set-up necessary to provide students with an automatic potentiometric titration facility. (BB)

The article corrects discrepancies in the literature on the founding of psychology laboratories in the United States before 1900. Previous reports omitted established laboratories and created disputes as to founders and dates of establishment. A review of literature and a list of laboratories are provided. (KC)

Elementary school teachers and volunteers turned a small room into a writing center, where elementary students can work on compositions with the encouragement of secondary school tutors. (SJL)

Falk School, the laboratory school for the University of Pittsburgh, has gradually developed a "personalized progress plan" that involves nongraded organization, multiple-age grouping, modified team teaching, and a carefully sequenced curriculum. (Author/MLF)

Describes a credit-bearing course at Brooklyn College which trains undergraduates to be peer-tutors in writing. (DD)

Deals with such matters as evaluation of the effect of peer tutoring, tutor training through counseling programs, and the effect of peer tutoring on retention in college. (DD)

Describes a simple conductivity apparatus for the determination of ionization and solubility product constants of various substances. The uses of the apparatus in determining the ionization constant of a weak monoprotic acid and in measuring the rate of diffusion of ions through a membrane are also presented. (HM)

An alternative development of the quadratic formula via paper squares and rectangles is presented. A physical model is constructed to demonstrate the constant term needed to complete the square. (MP)

Discusses a laboratory experiment in isotope production designed to help the students understand some of the concepts in elementary nuclear physics. (GA)

Describes an undergraduate experiment of research potential. The experiment cconsists of measuring the time of contact of a metal rod bouncing on a steel base as a function of the velocity of impact, length, diameter, and material of the rod. (GA)

Summarized are current analytical techniques used to classify, isolate, resolve, identify, and quantify organic compounds present in drinking water. A variety of methods are described, then drawbacks and advantages are listed, and research needs and future trends are noted. (CS)

Three mineralogy meetings which occurred in 1978 are reported. (BB)

Describes an open-ended laboratory project suited to science materials. The students are asked to determine the structure, the properties and possible applications of a commercial material that is being developed and supplied by the manufacturer. (GA)

This is part two of a series. It covers industrial vapor explosions and gives case histories of water-molten metal explosions. (BB)