Describes activities that test the preferences of stimuli of small insects such as light, sound, smell, and temperature. Experiments are carried out through the use of controlled and independent variables and a simple inexpensive apparatus. (DKM)

Activities that use a common fluorescent light as a strobe light to make things appear to slow down, speed up, or stand still are presented. Background information on strobe lights and directions for the activities are provided. (KR)

Describes a simple and inexpensive way to construct two small growth chambers for studying phototropism in the science classroom. One chamber is designed to illustrate how plants grow around obstacles to reach light and the other to illustrate directional light responses. (HM)

Presents a demonstration to show the formation of images in the retina in normal vision, in farsightedness, and in nearsightedness using only a 35mm slide projector. (MKR)

Provides instructions for producing a spectrum in the secondary science classroom. Offers suggestions for using the spectrum and discusses how to make a rainbow using a garden hose or houseplant sprayer. (JN)

Describes equipment set up and experiment objectives, variables, analyses of data as well as data interpretation. Deals with surface colors besides the classical examples of black and white. (BR)

Several simple experiments using easily obtained materials are described which illustrate some of the properties of light (travels in straight lines, reflection, and refraction). (JR)

Presents experiments with polarized light for grades 8-12 which can produce colorful effects with a minimum of equipment and can illustrate many principles of physics, chemistry, and geology. (MKR)

Discusses the nature of virtual images and how they can be plotted and used to reveal important relationships between objects and their mirror reflections. Describes some applications of virtual images in the theater and classroom. (JR)

Describes an exercise in which students can use flashlights, mirrors, and colored paper to discover scientific principles regarding optics. Addresses the concepts of angles of incidence and reflection, colored vs. white light, and mirror images. (WRM)

Describes a number of activities designed to assist student understanding of the phenomenon of light bending when it passes from one meduim to another. (JR)

Describes a series of optical illustions designed to explore the nature and behavior of light, the mechanics and optical principles of eyes, and the brain's learned ability to interpret what we see. (BR)