Ten ideas are presented for classroom demonstrations in elementary schools. Topics covered include air pressure, siphons, electrostatics, melting point, and physiology of the human body. (PS)

The virgin forests supply a wealth of knowledge and information concerning soil conditions, climate, etc. which can be readily ascertained from simple experiments. (DF)

By investigation it can be shown that life partnerships are founded on the collaboration between each species of animals and plant-life, and that only those species which integrate themselves into the whole can find their natural places in a forest. (DF)

Suggestions are provided for teaching a unit on bees to first-grade students. In addition to science content, students learn valuable citizenship and academic skills while engaged in such activities as honey-tasting, visiting an apiary (bee farm), and writing poetry. (Author/JN)

Describes the first Biology Olympics for high school teams which took place at Slippery Rock State College, Pennsylvania. Individual events are described as well as the visitation day program for nonparticipants. (SA)

A set of instructions for growing algae successfully in the classroom and maintaining the culture is provided. Aids for identification of freshwater organisms are suggested. (SA)

Described is a method for integrating electrical and mechanical events of the cardiac cycle by measuring systolic time intervals, which involves simultaneous recording of the ECG, a phonocardiogram, and the contour of the carotid pulse. Both resting and stress change data are provided as bases for class discussion. (CS)

A modification of the Ames test for detecting carcinogens and mutagens using a strain of bacteria is described. A suggestion is given for checking the correctness of procedures by using particular hair dyes which have been shown to be mutogenic. (Author/SA)

Describes the collection, care, and maintenance of protozoa by elementary school students. Techniques for collecting and observing them are given. (SA)

Discusses strategies for teachers to get back in touch with the earth and re-connect with the environment. Argues that the teacher's appreciation for nature's beauty will bring about a sensitivity not experienced before and help students develop a reverence and awe for the natural world. (JRH)

Presented is a hand model which can be used to compare and contrast mitosis and meiosis. Features and procedures of the technique are detailed. Limitations of the models are discussed. (CW)

Described is a laboratory experiment designed to expose students to problem-solving methods individually and as a group. Included are background information, a list of materials, laboratory procedures, analysis methods, and probable results. (CW)

Described are teaching methods used to teach measures of central tendency to middle and high school students. Discussed are quantitative and qualitative data, basic experimental terms, a general overview of data analysis, data charts for quantitative data, qualitative data analysis, and extensions for older students. (CW)

Presented is an activity designed to teach the use of the scientific method to non-science majors. Collecting, classification, and follow-up activities for a beach trip are discussed. Two simple dichotomous keys are included. (CW)