Unusual experiments in sound are described. Sounds produced from the vibration of areas are represented by many beautiful sand patterns. The vibrating areas vary from square to circular plates. (SA)

Presents an investigative sequence of experiments addressed to the topic of photosynthesis. (BR)

This experiment, mixing solutions of potassium iodide and lead nitrate to give a bright yellow lead iodide precipitate, often leads students into other topics such as making paint from the precipitate. (BB)

Describes the construction of a simple apparatus capable of converting solar energy into mechanical energy. Construction of the engine'' is inexpensive, and should stimulate student interest in the idea of producing power directly from the sun. (JR)

Experiences and experiments with mirrors will spark pupils' imaginations while providing insights into the nature and behavior of light. (Author/DF)

Several activities related to color are discussed. These include placing different colors on a disk which, while spinning, appears to be white. Also discusses complementary and primary colors. (JN)

Describes a lab investigation designed to introduce students to soil compaction and help them to learn to design and adapt procedures that scientists use when they plan and conduct controlled investigations. Provided are objectives, a list of materials, procedures, and a sample student handout. (CW)

Describes activities with organisms from freshwater ponds and ditches. Several experiments involve predation, some involve habitat choices, and one addressees the role of sunlight in supporting plant-eating animals. (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 approach that can help students to understand what happens in an experiment. Uses overlapping transparencies of both the experiment and the analysis. Includes details of the experiment and transparency preparation. (DDR)

Describes two experiments in physics, using the same inexpensive apparatus, that may be performed as projects by high ability secondary science students. (JR)

Describes a chemistry experiment appropriate for the day before Christmas vacation. Students prepare candy canes by following a recipe written in chemical terms. This illustrates that food is composed of chemicals and that the processes involved in cooking are chemical and physical changes. (JR)