Uses diagrams and text to describe four activities involving trees designed to aid students in better understanding responses to seasonal changes (ZWH)

Explains the procedures used to determine the regulatory properties of yeast pyruvate kinase. Involves a partial purification using PEG precipitation that can be done in one laboratory period with simple equipment. (DDR)

Presents an activity that stresses the role of fungi and decomposers, highlights the rapidity by which they complete this process, and allows students to experiment with ways to control the rate of decomposition. (CCM)

Focuses on three habits associated with personal values and attitudes, and one habit associated with social skills of doing science. Illustrates four habits of mind, first through a story of modern scientific investigation, then as the basis of school laboratory science experience. Discusses implications related to integration of these four habits…

Describes a simple and inexpensive procedure for constructing a circuit element that will allow for continuously variable and precisely controllable low direct-current voltages. (WRM)

Describes a joint project between a local secondary school and a feeder primary school to challenge students to produce an environmentally friendly green ink. The project involved children in developing new skills and boosted the profile of science in schools. (Author/CCM)

Discusses a classroom activity to trigger student interest early in a chemistry class. Describes a take-home exercise to convince students that a basic knowledge of chemistry is relevant to a better understanding of course topics in their majors. (CCM)

Finds that first-year college students can understand in detail the origin of the equivalent mass. Provides both a simple calculation derivation of this result as well as a noncalculus derivation. Argues that for every soft spring, the equivalent mass should be somewhere between m0/3 and m0/2. (CCM)

Describes a laboratory exercise to supplement or replace more traditional force table experiments, and adds real-world examples to this part of the introductory physics course. (CCM)

Explains a project called "Life Cycle of a Pencil" which was developed by the National Science Teachers Association (NSTA) and the U.S. Environmental Protection Agency (USEPA). Describes the life cycle of a pencil in stages starting from the first stage of design to the sixth stage of product disposal. (YDS)

Discourse analysis focuses on the negotiation concept to describe interaction between teachers and children in Mexican science classes in an elementary school. The interaction is seen as a collective way of developing Vygotsky's zone of proximal development (ZPD) in a cooperative context with the ZPD being the social product. (MMU)

A home kitchen can serve as a stockroom to provide the supplies needed to culture fungi for classroom use. Provides some alternative media and cultural techniques along with two alternative classroom investigations that can be employed in elementary through college-level classrooms. (Author/SAH)

Presents an activity on liquid chromatography that demonstrates the influence of mobile phase polarity on the separation of dyes with different solubilities. (YDS)

Discuses the counterintuitive fact that ice is a good insulator and creates a 'teachable moment' for describing the use of discrepant events as a strategy for science instruction and exploring a possible solution to the question, "How warm can the interior of an igloo get?" (Author/ASK)

Uses the GEMS guide, "Ants at Home Underground", to explore the life of ants and teach about them in a classroom setting. The activity applies students' knowledge of ants and students learn about ant colonies, what ants eat, and how they live. (SAH)