Described is an activity designed to allow students' thinking about taxonomy to evolve in the same fashion as the thinking of taxonomists. Presented are the problem to be investigated, procedures, and questions for discussion. (CW)

Presented is a cytogenic technique which enables students to produce preparations of dividing cells. Described are materials, methods, typical results, and assessment for this activity. The usefulness for a wide range of ages and abilities is stressed. (CW)

Described is an activity in which the interactions between a parasite and its host may be demonstrated using the relationship between yogurt and two species of bacteria. Background information on Koch's postulates is provided. Materials, laboratory procedures, and results are discussed. (CW)

Described is an investigation of the contributions of genes and environment to a quantitative character using readily available varieties of dwarf beans. Included are a list of materials, typical results, and a student instruction sheet. (CW)

Described is an experiment which investigates the reciprocal changes in both rats and their handlers during handling. Included are questionnaires, procedures and a description of materials. Probable results are discussed. (CW)

An activity that can be used to teach plant nutrition and the use of hydroponics is presented. Materials and procedures are discussed. Possible topics for science projects are suggested. (CW)

Described are two investigations carried out in a high school biology department using a domestic microwave oven to compare the relative attributes of the autoclave and microwave oven in school use. Discussed are equipment, methods, and results of each investigation. (Author/CW)

Described is a simple, safe, and inexpensive experiment which allows secondary school pupils to observe how fungi and bacteria grow and interact with each other. Included are discussions of materials, methods, observations, and a historical comment. (Author/CW)

Plant material can be used for classroom investigations of factors influencing infection. Plant responses to infection can be used as teaching models for animal as well as plant diseases. Three activities are discussed. (Author/CW)

Provides a calendar for the month of November on which are placed directions and pictures for different activities that can be performed each day. Outlines materials and procedures for an experiment. Includes information on an acid rain teachers kit, availability, and price. (RT)

Provides a graphing exercise designed to help students understand the coevolution of the physical environment and the biosphere during the last four billion years of Earth's history. The ideas are based upon the Gaia theory, which is the belief that the Earth is a self-regulating network of interdependent physical and biological systems. (ZWH)

Describes the construction and use of a shell-discovery kit for students to employ in actively investigating the natural world. (WRM)

This book suggests an approach to science instruction that integrates literature as an alternative form of instruction or to enrich textbook instruction. It uses conceptually and factually correct works of fiction and outlines activities where students are allowed to do the majority of the work and the teachers act as facilitators. Though the…

This book of life science activities introduces a new experimental animal--the WOWBug, "Melittobia digitata"--that is commonly found in nature but has never before been used in the precollege classroom. It includes 20 activities and experiments for grades 5-12, that cover topics from basic orientation to ecological interactions, from physical…

Activities which can be done with items purchased in supermarkets form the basis of this book. The activities are arranged into sections by type of item; breakfast foods; dried foods; soups; baking ingredients; gelatin; condiments; coffee; salad dressing; dairy products; meats; cleaning supplies; cookware; juices; picnic supplies; paper towels;…