Physics Instructional Resource Agent (PIRA)
"PIRA is an association of professionals dedicated to the support and advancement of physics education. We work together and in alliance with physics educators and support specialists to develop effective teaching tools and techniques to aid and promote physics education." "One of PIRA's most important contributions to physics education is the PIRA Demonstration Bibliography. The demonstration bibliography is a compilation of thousands of referenced demonstrations, all categorized according to physics concept."