Four worksheets are provided which give instructions for constructing a tangram by locating points on the Cartesian plane, which specify shapes to be made with the seven tangram pieces, and which ask students to create additional shapes. (DT)

Describes a demonstration experiment designed to estimate the equilibrium constant by comparing the conductivities of acetic and hydrochloric acids. (CC)

Discusses the procedures that should be observed in constructing a dichotomous key. The keying exercise described was used as a laboratory activity in a biology course for elementary education majors, however it could be used in other courses. (JR)

A description of the organization and implementation of a mathematics lab for individual or small group use. Room arrangement, types of materials, and the role of teacher and aide are briefly discussed. (DT)

The study assessed the effectiveness of methematical laboratories as compared with the regular mathematics teaching program. A control group, mathematical laboratory group, and a third group called a Class Discovery Group were formed for making comparisons. Gains were higher on cumulative achievement, transfer, and divergent thinking measures for…

Describes an indirect laboratory method of calculating pi by using circular aluminum foil pieces as reactants with sodium hydorxide solution in a eudiometer, and indicates the presence of errors ranging from +0.05 percent of 3.1416 to +0.5 percent of 3.142. (CC)

Short notes describe the use of articles concerning the creationist/evolutionist controversy in teacher education, a simple demonstration of digestion and absorption, and the use of a planetarium in biology motivation. A short report discusses the social need for living with conflict." (AL)

Describes a laboratory method of determining the formula for metal oxide, provides brief descriptions of two new courses at Kansas State Teachers College, and reports on meetings identifying critical needs in science education. (AL)

Using mosquito larva in the laboratory for studying the effectiveness of insecticides. (CP)

A mathematics center is described, including a list of basic equipment for the laboratory. The main focus of the article is on teaching method. Three discovery-oriented procedures are noted, and successful activities and materials are discussed. (DT)

Describes a quantitative chemistry experiment, conductometric titration, which was adapted for a blind student. Indicates other areas which can be adapted for similar experiments. (TS)