Physics Instructional Resource Association - Forum http://physicslearning2.colorado.edu/ Fri, 22 Jun 2018 03:44:01 +0000 Kunena 1.6 http://physicslearning2.colorado.edu/pira/components/com_kunena/template/default/images/icons/rss.png Physics Instructional Resource Association - Forum http://physicslearning2.colorado.edu/pira/ en-gb