Provides a series of questions for students to consider when observing construction sites. The thoughtful observations can help students with principles of science. (PR)

Discusses some scaffolds or prompts for helping students to ask themselves better questions about science topics. Presents some teacher questions that test and develop some core thinking skills. (PR)

Describes an activity having students use a microscope to observe the "hooks" and "loops" found in Velcro and on the seeds of the cocklebur plant. (PR)

Describes a simple and inexpensive, one-period activity to extract DNA to make the study of DNA less abstract. A microscope titration is used to determine when cells are ready for DNA extraction. (PR)

Appreciation for the images used in biology can be deepened through iconographical studies (the study of the subject matter and meaning of works of art.) Describes iconographical studies of organisms and ideas beginning with T. H. Clarke's analysis of the iconography used for the rhinoceros. (PR)

Describes a field trip to Costa Rica by college students and an instructor in a tropical ecology course. (PR)

Describes an interesting field experiment examining the distribution and diversity of a single community using lichens and the animals living in them. Combining field experience and laboratory work reveals not only the biology of some unusual organisms, but also community ecology and diversity. (PR)

Presents background information, science activities, and a color poster on the element chlorine. (PR)

Describes interdisciplinary activities for teaching students accurate information about dinosaurs. A list of 20 resources is provided. (PR)

Describes ScienceFest, a program that teams up students and teachers in an effort to create and perform original science-related plays. (PR)

Suggests that disinterest in physics occurs because students and adults can apply everyday concepts to solve problems without understanding the underlying physics concepts. Proposes Wagenschein's Exemplary-genetic Method to teach physics and illustrates the method with examples taken from history. (MDH)

Discusses misconceptions and outdated models appearing in biology textbooks for concepts involving bioenergetics and chemical reactions; adenosine triphosphate (ATP) as the energy currency of cells; the myth of high energy phosphate bonds; structural properties of ATP; ATP production from respiration and fermentation; ATP as an energy storage…

Describes a one-week, cooperative-learning assignment in which students design their own space stations. (PR)

Describes a Science Activities Contract program. Students agree to do four activities at home, and their parents agree to encourage and supervise the children in completing the activities. (PR)

Explores high school student's postinstructional knowledge about mass, volume, weight, and density in terms of what students need to know to successfully solve academic physical science problems. Presents definitions of the concepts, discusses hypothesized knowledge deficiencies, and suggests implications for instructional design. (Contains 31…