The environment lesson plans in this packet are designed to take an in-depth look at different components of the environment. The plans were developed with the assistance of specialists in educational processes and educators, students, and resource-agency people for whom they are designed. They have been field-tested in environmental education…

One of three in a series about pollution, this teacher's guide for a unit on noise pollution is designed for use in junior high school grades. It offers suggestions for extending the information and activities contained in the textual material for students. Chapter 1 discusses the problem of noise pollution and involves students in processes of…

This revised and expanded version of a similar manual first published in 1969 is designed to acquaint students at both junior and senior levels with some of the problems and effects of air pollution and the practical means of overcoming them. The 38 experiments comprise a group of exercises which can be selected according to the interests of the…

Four groups of preservice teachers were randomly assigned to one of three conditions to test the effectiveness of brief training in time-management techniques. Significant differences among the groups were observed on measures of promptness in completing tasks during student teaching and on self-ratings of proficiency in time management.…

Some number investigations on the multiplication table are provided by a sequence of four activity sheets. Beginning with examples of triangular and square numbers, the activities lead to the generalization. (MNS)

Presents a unit that focuses on landslides and integrates earth science, physics, chemistry, and math. Includes activities to investigate porosity, permeability, cohesion, saturation, and gravity. (JRH)

Reports research concerning the definition of variables by pupils ages 12 to 14 during investigative work. Findings suggest that an increase in the complexity of an investigation lowers the ability to identify relevant variables and substantive concepts intrude on the ability to define the appropriate dependent variable and to control variables.…

Interviews were conducted with 38 representatives of child protective services in Wales to investigate the balance of prevention, investigation, and treatment in child protection services. Results found that the agencies focused on investigation and ignored treatment services. Recommendations for future child protection services are provided. (CR)

Studies the polarization effect on water by cations and anions. Describes an experiment to illustrate the polarization effect of sodium, lithium, calcium, and strontium ions on the water molecule in the hydration spheres of the ions. Analysis is performed by proton NMR. (MVL)

Presents two proofs that only five regular polyhedra exist. The first is a geometric proof, and the second is based on graph theory, using the relationship between the vertices, edges, and regions of the graph model. (MDH)

Presents four investigations involving geometric sequences and series: folding a sheet of paper in half 8 times, stacking pieces of paper cut in half 50 times, snapping your fingers at intervals doubled in length for 1 year, and summing time intervals continuously cut in half. (MDH)

A new model for problem solving is broken down into four overlapping and interactive processes: Problem Posing, Problem Approach, Problem Solutions, and Communication. Figures illustrate the skills used in this new image of science problem solving, and a ninth-grade science investigation employing the processes is described. (LZ)

Prior to and following general physical and colposcopic anogenital examinations, interviews were conducted with 43 mothers and daughters (3 to 15 years) referred because of allegations of sexual abuse. There was no evidence that children were retraumatized by the examination. Children did not judge the exam as painful. Children were significantly…

This article discusses use of child interview data to decide whether or not a child has been sexually abused. It examines the role of child interview findings from a historical perspective, discusses the challenge of researching criteria indicative of a true allegation, reviews existing studies of child interview data, draws conclusions, and…

Students explore three-dimensional properties by creating red and green wall decorations related to Christmas. Students examine why images seem to vibrate when red and green pieces are small and close together. Instructions to conduct the activity and construct 3-D glasses are given. (MDH)