Several suggestions are made for using empty duplicating fluid containers in science experiments and activities. (JR)

Describes methods and procedures for killing, preserving, mounting, and displaying insects. (JR)

Describes an activity using simple materials that gives students an opportunity to express their ideas about possible extraterrestrial life forms. (JR)

Describes how student understanding and interest in the metric system system can be stimulated by building and launching model rockets. (JR)

Describes a lab investigation designed to introduce students to soil compaction and help them to learn to design and adapt procedures that scientists use when they plan and conduct controlled investigations. Provided are objectives, a list of materials, procedures, and a sample student handout. (CW)

Describes an activity designed to allow secondary students to practice pattern recognition using the proof-of-purchase scanning lines found on many consumer products. Provided are a list of materials, procedures, and student activity sheets. (CW)

Describes a demonstration to show the character and behavior of mixing clouds. Discusses laminar and turbulent flow, and the formation of contrails and other cloud phenomena. (CW)

Presents activities for the fossilization process by using rust prints to simulate fossils. Photographs illustrate the procedures described. (HM)

Provided are background information, equipment lists, and procedures for four activities for teaching aquatic ecology. Activities include "The Aquatic Food Chain Game"; "Two-Liter Aqua-Vivariums"; "A Sealed World"; and "Weaving a Web: Evaluation." (CW)

Presented are 12 biology experiments suitable for use in intermediate grade classrooms. Topics include plants, protists, fungi, animals, and osmosis. Provided are objectives, lists of materials, procedures, results, and explanations of the results. (CW)

Six activities complete with reproducible worksheets are presented. Materials and procedures for each are listed. Answers to the quiz and crossword puzzle are included. Topics include the water cycle, the world's oceans, the ocean floor, and fish. (CW)

Activities that may take place in a greenhouse are discussed. Included are learning how to grow plants, plant growth, soil, vegetative reproduction, and plant habitat adaptations. Materials, procedures, and results are presented for the activities. (CW)

Presents several fun activities and teacher demonstrations which simplify terms and condense science concepts for teaching about the lever, wedge, wheel and axle, screw, pulley, and the inclined plane. Includes objectives, materials, procedures, suggested follow-up assignments, and diagrams. (RT)