Presents a simple experiment involving the sense of smell that students can accomplish during a lecture. Illustrates the important concepts of equilibrium along with the acid/base properties of various ions. (JRH)

Discusses discrepant events designed as a demonstration to present a situation or phenomenon that has an unexpected and sometimes very surprising outcome. Presents ways of developing science lessons linking discrepant events with the learning cycle as an example. (ASK)

Discusses a science fair project with a diverse group of K-2 urban school students. Students experienced the purpose and procedure for a scientific investigation, although they learned in different ways and at different rates. (ASK)

This activity takes students through the process of fermentation. Requires an entire month for the full reaction to take place. The reaction, catalyzed by bacterial enzymes, produces lactic acid from glucose. (SAH)

Presents an opportunity for students to become better acquainted with inventors and their work, examine past discoveries, and pursue new ideas. (ASK)

Discusses the biodiversity crisis. Presents a simple invention to examine and photograph fish. (ASK)

Presents an activity that uses chenille stems, colored yarn, plastic straws, and ingenuity to make a low-cost manipulative kit for modeling mitosis and meiosis. (ASK)

Describes a method for teaching about DNA using looped cereals. Outlines the procedure and concept in detail. Presents several possible concepts that allow the instructor to choose what is the most appropriate for students. (SAH)

Describes a method for working with Coomassie Blue to analyze banding patterns of purified eukaryotic cell membrane proteins. (SAH)

Presents strategies to use rainsticks with middle grade students. Teaches scientific inquiry using a rainstick activity that challenges students to explore posing, probing, and persuasion and represents the National Science Standards. Allows for the integration of different disciplines. Provides instructions on how to make a rainstick. (YDS)

Describes an inquiry-based experiment on the heat absorption of color that is developed from a scientific misconception. Uses three cans colored white, gray, and black and observes and compares the temperature changes of water in cans when placed under 100 watt lamps. (YDS)

Offers two activities to help students explore the geosciences during Earth Science Week. Uses a fossil collection simulation that has students digging through strata of newspaper. Presents an interdisciplinary research project that has students investigate the fossils, minerals, and rocks of their home state. (ASK)

Describes an interactive game designed to help students see and understand the dynamic relationship between DNA, RNA, and proteins. Appropriate for either a class or laboratory setting, following a lecture session about protein synthesis. (DDR)

Describes a science lesson plan on starfish based on a hands-on approach. Divides students into committees of four in which students research identified questions and present their reports. (YDS)

Describes a laboratory experiment on the determination of the molecular weights of gases lighter than air. (YDS)