Describes a simple computer-interface experiment for recording the response of an RC network to an arbitrary input excitation. The setup is used to pose a variety of open-ended investigations in network modeling by varying the initial conditions, input signal waveform, and the circuit topology. (DDR)

By utilizing world systems analysis and dependency theory in world history, ways that students can raise questions and integrate ideas at the high school and undergraduate level are identified. A discussion of the origins and design of the 14th century world system demonstrates how it is set apart from the modern world and how conveying that…