Describes classroom activities using algae, including demonstration of eutrophication, examination of mating strains, and activities with Euglena. Includes on algal morphology/physiology, types of algae, and field sources for collecting these organisms. (JN)

Describes the stages and outcomes of a junior high school science lesson on erosion and deposition utilizing a "kids as researchers" theme. Stages include awareness, discussion, investigation, experimentation, generalization, and extension. (SK)

Describes an approach that uses fiction as a springboard to environmental science experiments and discussions. (JRH)

Describes the effectiveness of cooperative learning on discipline problems, interdependence between students, and teacher-student interactions. Explains how to group students and introduces a laboratory activity on covalent and ionic bonds. (YDS)

Features a checklist of structural questions for writing a laboratory report discussion. Presents a rationale for this method of helping students organize their thoughts. (DDR)

Contains three demonstrations to help students develop an adequate understanding of the nature of science. Two use the inquiry method to show students the importance of evidence in formulating explanations, and the third uses the history of science to show that science is tentative as well as based on evidence. (LZ)

Describes the involvement of students in the construction of an inexpensive wooden balance to aid in their understanding of mass. (ZWH)

Describes a simple, relatively inexpensive laboratory activity that allows students to examine the requirements for the fungal decay of wood and devise methods for prevention. (ZWH)

Describes a hands-on activity in which the student's task is to design testing procedures and use appropriate formulas to meet the objectives of a two-dimensional projectile motion lab. (ZWH)

Provides real life assignments that can be used to help students apply chemistry laboratory techniques to solve environmental hazardous waste problems. Numerous diagrams are provided to aid in describing the experiments performed. (ZWH)

Uses extremely strong neodymium magnets to demonstrate several principles of physics including electromagnetic induction, Lenz's Law, domain theory, demagnetization, the Curie point, and magnetic flux lines. (MDH)

Describes a group of chemistry experiments designed to convey to students the real and measurable nature of certain mathematical concepts. (BR)

Using examples this article tries to dispel a common misconception that theories "mature" into laws by constant testing and confirmation. (GA)