Suggests an activity designed to stimulate student interest in optical illusions. By preparing posters of a number of optical illusions and mounting them on the classroom wall, many students will be motivated to seek an explanation for these phenomena. (JR)

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 a classroom activity designed to interest and motivate students in science. By comparing scientific experimentation to the processes employed in planning, playing, and analyzing the results of a football match, students become more aware of the similarity between activities in their lives and in science. (JR)

Introduces an interdisciplinary activity using a cola drink. Describes the lesson plan, including objectives, procedures, evaluation, projects, and conclusions. Provides two laboratory sheets containing problem, hypothesis, materials, procedure, observations, and conclusions, vocabulary table, and data table. (YP)

Introduces a construction method for a bubble made of polyurethane plastic and its applications in an ecology classroom. Provides the materials list, directions for bubble construction, and classroom activities. (YP)

Presents an activity designed to stimulate student interest and facilitate the study of microorganisms. Focuses on an epidemic situation in which students play the role of epidemiologists. (DDR)

Describes an activity on charting 6th and 7th grade students' ideas about a potential science project. Summarizes a five week project on creating a new ride or redesigning existing rides in an amusement park, including research and sketches, final drawings, models of rides, and class presentations. (YDS)

Explains miniprojects in high school science courses. Shows the project idea table and five examples with explanations. Discusses the experience and some positive results for students. (YP)

Describes activities with star projection devices that include process skills such as observing, classifying, collecting and interpreting data, and producing a model. Provides background information, construction method, and two teaching examples. (YP)