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The principle of virtual work is an essential concept in the field of mechanics and engineering. This is used to solve problems related to the equilibrium of a structure or system. It is based on the assumption that if a system is in equilibrium, the work done by all the forces during a virtual displacement is zero. This principle is applied by considering virtual displacements of the system and the corresponding work done by internal and external forces.
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Related Experiment Video

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How to: Construct and Use a Problem-based Programmed Lecture.

B Joorabchi1

  • 1Clinical Medicine at the University of Illinois, 190 Medical Sciences Building, 506 South Mathews Ave, Urbana, Illinois, 61801, USA.

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Summary

Programmed lectures enable a single teacher to create small-group tutorial experiences in large lecture halls. This paper details their construction and administration, contrasting them with traditional lecture methods.

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Area of Science:

  • Educational Technology
  • Pedagogy

Background:

  • Traditional lectures in large amphitheaters often lack engagement.
  • The need for interactive learning environments is increasing.

Purpose of the Study:

  • To describe the methodology for constructing and administering programmed lectures.
  • To compare the effectiveness of programmed lectures with classical lecture methods.

Main Methods:

  • The paper draws on ten years of practical experience with programmed lectures.
  • It outlines the specific steps and considerations for implementing this teaching method.

Main Results:

  • Programmed lectures can effectively simulate small-group tutorials within a large-group setting.
  • The paper provides a detailed contrast between programmed and classical lecture approaches.

Conclusions:

  • Programmed lectures offer a viable alternative to traditional lectures for enhancing student engagement.
  • This method allows a single instructor to manage a more interactive and personalized learning experience.