Revision History for USGS Open-File Report 2011-1158

  By Kelsey Linton and Ross S. Stein

  How to Build and Teach with QuakeCaster—An Earthquake 
  Demonstration and Exploration Tool

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  Added .mp4 in addition to the .m4v versions
  October 14, 2011

  Used H264 compression and added smaller 480x272 videos
  October 12, 2011

  Improved graphics for figures 1 and 2
  October 10, 2011

  Posted online at http://pubs.usgs.gov/of/2011/1158/
  September 29, 2011

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  Version 1.1 posted March 3, 2015

  Report (PDF) updated throughout to meet current editorial standards. 
  Materials for building QuakeCaster updated, mostly to reflect the substitution of
  nonskid-covered foam board for porcelain tile. Videos were not updated.