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Short digital videos for demonstrations and lab activities in Physics |
A set of digital video clips has been created to study and understand two-dimensional motion, such as, projectiles, motion in a circle, and oscillatory motion. These videos could be used in interactive class demonstrations, laboratory experiments and in special projects by the students. Also, new videos were created to help students develop two fundamental conservation principles: energy and momentum. The video tools used for in class-lab activities are Videopoint and Tracker.
The freeware online tools to analyze video clips, allow students to carefully study the video, take position and time data, calibrate the video, organize data in tables and build position versus time graphs. Students may use the graphs to make inferences about the functional relationship between the variables, the type of motion and the forces. The online tools can be used to analyze video clips in several formats: avi, gif and swf. The project website also includes a tool to do regression analysis of the data taken from the videos. For a more sophisticated data analysis, the students may transfer the data to the local PC and use Videopoint.
The tools and the short video clips are available to students and faculty through the project’s website http://pluto.cayey.upr.edu/moodle . Several video clips in flash format are available in the website section “Videos I – Study Carefully” ( http://pluto.cayey.upr.edu/gallery2 ). Here the student is able to explore the different videos and select one to be used for his/her special project. The video analysis tools and several video clips are available in the website section “Videos II – Online Data Analysis”. In this section, the student selects a video clip and learns the basics of motion analysis: obtain the data, calibrate the video and build a graph of position versus time. Students and faculty may use these tools at anytime and from any site. This section of the website provides faculty members with a detailed description on how to use digital video to teach physics and how to use a video analysis special project to assess students understanding of basic concepts and relationships.
