sentences:  Zygmuntowicz is an active speaker at museums, conferences, and chamber music festivals, and intensive workshops, on topics ranging from historical and contemporary violin-making techniques to modern violin acoustics and cutting-edge research.Recent engagements include, The National Museum of Mathematics (MoMath) in 2016, Lake Champlain Chamber Music Festival of 2015-16, Music@Menlo Festival of 2017, The 2018 La Jolla SummerFest, Banff String Quartet Competition of 2013, The 2012 EG Conference, and yearly appearances at the Oberlin Acoustics Workshop, and at the Juilliard School in NY.These presentations have been adapted to the various interests of the general public, active string players, scientific researchers, and experienced luthiers.