Suggests suitable species of microscopic green algae for demonstrating diversity of form, increasing complexity in related species, the animal" and plant" characteristics of protists, and protist behavior. (AL)

Hot air and helium balloon launching activities by students from Mountain View Center for Environmental Education, University of Colorado. Gives ideas for using this activity in schools. (BL)

Presents observations made by students attempting to determine if the moon has an influence on the development of corn. Concludes that if a lunar influence exists it must be very subtle and easily obscured by weather variations during the growing season. (DS)

Reports a verification that hot water begins to freeze sooner than cooler water. Includes the investigations that lead to the conclusions that convection is a major influence, water content may have some effect, and the melting of the ice under the container makes no difference on the experimental results. (DS)