Reported are observational limits of detectability for several single stimulus and multi-stimuli observation tasks in secondary level chemistry. Provided are tables of actual results obtained including type of observation, chemical system used, method of determining stimulus magnitude, and observational thresholds. (Author/YP)

Presents a distillation experiment that uses temperature sensors connected to a computer in place of thermometers, and enables the whole class to view the data on a monitor and interpret and discuss the data in real time. (JRH)

Skillful, scientific observation of even one student having difficulty can give teachers ideas for helping all of their students. Discusses planning observation time, tools for observation, and how to observe students and interpret observations. Provides specific suggestions for five observed behaviors and sources of more information (two…

Explains how rubrics can be used to assess children's understanding of chance and data concepts. Encounters unexpected results besides assessing chance and data outcomes. (ASK)

Social studies instruction using a variety of data sources engages elementary school children in relatively autonomous collecting, organizing, and evaluating of data--processes necessary for exercising sound judgment and taking appropriate action. (RM)

Provides a description of a computer program developed to supplement instruction in testing of antibiotics on clinical isolates of microorganisms. The program is a simulation and database for interpretation of experimental data designed to enhance laboratory learning and prepare future physicians to use computerized diagnostic instrumentation and…

School system leaders are discovering the power of data for promoting school improvement. This guide provides practitioners, parents, and community with insights and tools for cultivating a districtwide culture of data-driven inquiry. Chapter 1 points out that data provide quantifiable proof, taking the emotion and rancor out of the…

Discusses a graphical analysis method used in the physics laboratory. Shown are various kinds of graphs to illustrate the relationship between two variables. A procedure for deriving equations from laboratory data is described. (YP)

Recommends a revision of the traditional method for teaching history, so that students view facts as the starting point, from which they learn to classify, examine, and evaluate historical events. Suggests activities and projects for implementation of this teaching method. (LS)

Describes a class demonstration of observer bias in which students were led to believe what the research data would indicate. Reports that students reported trends consistent with the expectancy. Asserts that the demonstration had a strong and memorable effect on students and has value for demonstrating observer bias. (CFR)

This article provides ideas on how to conduct alumni telephone surveys: (1) use the information gathered; (2) implement a survey; (3) develop appropriate questions; (4) test a survey instrument; (5) train interviewers; (6) collect the data; (7) analyze the results; (8) report the results; and (9) use the results to take action. (MDM)

This article provides advice on how to plan and conduct an alumni census through the mail, drawing on the experiences of Stonehill College in North Easton, Massachusetts, which undertook such a survey in 1992. It focuses on costs, information needs, questionnaire design, mailing considerations, reporting the results, and expected response rates.…

Presents a learning cycle lesson plan in which students investigate the question of how cells divide. Students use microscopes to explore actual plant root and stem tissues to generate and test hypotheses to answer the question. Includes teacher material, student material, and teaching tips. (MDH)

School leaders are developing a "just-in-time" approach to research and data analysis to help inform and shape their decisions. Careful analysis of data can reveal patterns that can be improved. The key is to focus districts' research and analysis on the issues that will make the biggest difference in terms of student, teacher, and…

Exercises were developed using tornado statistics to provide students with a better understanding of the spatial and temporal characteristics of these phenomena in the United States. Four categories of exercises were considered beginning with the simplest and progressing to the more complex. The first set of exercises required students to…