Presents an inexpensive class activity to teach elementary students about light reflection off various surfaces. The activity involves aluminum foil, waxed paper, magazine pages, newspapers, overhead transparency film, construction paper, fabric, and a hand lens. A student page includes questions to make students think about reflection. (SM)

Uses a compact disc (CD) as a grating in spectroscopy experiments. Suggests using the CD with fluorescent tubes, compact fluorescent light bulbs, incandescent filament light bulbs, and sodium and mercury vapor lamps. Discusses environmental and economic aspects of fluorescent lighting. (MVL)

Describes activities concerning interference phenomena derived from illuminated rotating soap films. Suggests reflecting incident light off of the soap film onto a projection screen. Discusses several possible experiments, how to make soap solutions, and vibrating soap films. (MVL)

Describes the construction of an inexpensive light sensor that can be used to measure irradiance in aquatic habitats. Includes a list of tools and materials, details of construction, and usage of the light sensor. (DDR)

Presents a method for measuring the speed of light using a laser pointer with adjustable focus as the signal carrier, a signal generator to modulate the light beam, and a student oscilloscope to detect the phase shift. (Author/CCM)

Describes a quantitative approach to the demonstration that the energy of a photon is proportional to its frequency. (CCM)

Reviews the use of concept cartoons in support of the constructivist view of learning, and gives two particular examples to show how they can help students' understanding of the formation of shadows. (Author/MM)

Describes an inquiry-based cooperative activity designed to give students a sense of the connection between stellar spectra and temperature. (WRM)

Describes an investigation of the effectiveness of a role-play activity used to help secondary science students learn about color subtraction. Finds that pupils were better able to understand the abstract scientific concepts after the activity. (Author/WRM)

Reports on a task in which students wrote scripts for a silent movie to consolidate their understanding of the subject of light. Considers the broader implications for effective task design, implementation, and review of this kind of writing. (Author/ASK)

Presents an activity that explores the temperature behavior of UV-sensitive beads and investigates the effectiveness of sunscreens. (ASK)

Discusses the mix of features in the learning environment that must be considered for adult learners: visual environment, acoustics, temperature, lighting design, and layout. Addresses the interplay of these features with the learner's behavior in the space. (Contains 41 references.) (SK)

Preference between forced choice and free choice in concurrent-chain schedules of reinforcement was investigated in pigeons after exposure to particular combinations of terminal links. In Experiment 1, in which terminal links always ended with reinforcers, one of three pairs of terminal links was arranged as preexposure: (a) both terminal links…

In this paper are presented the views of Al Haytham and his predecessors on the shadows, the rectilinear propagation of rays and the images produced by pinholes. Al Haytham had given erroneous views on the distribution of light in the shadows. Educational applications of these are presented. These applications concern: (a) Simple experiments (b)…

In this study, we discuss the scaffolded design of ODRES (Observe, Discuss, and Reason with Evidence in Science), a computer tool that was designed to be used with elementary school children in science, and report on the effects of learning with ODRES on students' conceptual understandings about light, color, and vision. Succinctly, dyads of…