Describes a one- to two-week project where students create a biographical scrapbook to document the life of a chosen scientist. When sources are not easily found, students are encouraged to use their imaginations to create birth certificates, news articles, letters, and interviews. (PR)

Describes types of sand and presents science activities using sand. (PR)

Presents 2 activities for students aged 8-12 in which students determine (1) whether or not earthworms can see white light; and (2) how an earthworm moves without legs. (MDH)

Presents an activity to determine the identity of animals that owls ingest. Students dissect and examine the contents of "owl pellets" which are the indigestible parts of animals that are regurgitated after eating. Provides instructions for implementing and extending the activity. (MDH)

Describes an experiment where the gram-equivalent mass of an unknown metal is determined by reacting the metal with dilute hydrochloric acid and collecting the evolved gas over water. This simple, reliable experiment routinely gives results within 1% of the accepted value. (PR)

Presents thought experiments and science activities for helping students think about quantum mechanics and the idea of randomness. (PR)

Describes four activities to analyze drinking water for its pH, hardness, turbidity, and conductivity. (MDH)

Describes four experiments that enable students to explore the phenomena of evaporation and condensation and determine the relative humidity by measuring air temperature and dew point on warm September days. Provides tables to calculate saturation points and relative humidity. (MDH)

Proposes the organization of noncompetitive science fairs to create a more positive learning experience for children in the elementary grades. Describes methods of organizing and judging the fair, and provides a list of suggested resources for science fair projects. (MDH)

Provides instructions to build an inexpensive device to demonstrate wave-motion to elementary school children. (MDH)

Describes a student project for building a laboratory balance. (PR)

Nitrate assimilation by plants provides an excellent system for demonstrating control of gene expression in a eukaryotic organism. Describes an assay method that allows students to complete experiments designed around the measurement of nitrate reductase within a three-hour laboratory experiment. (PR)

Explains how sweet potato roots can be used for plant tissue culture for biology laboratory instruction. (PR)

Explains that discussions should be used to help students think about their experiences with hands-on science learning. Making hands-on science "brains-on" will help challenge student's misconceptions. (PR)

Presents the plans for y-suspension, coupled, and double pendula and explains in detail why they move as they do. The mathematics that describes the motion is examined. (DDR)