Thousands of people gathered on the National Mall (Washington, DC) for the USA Science and Engineering Festival, which ran from Sunday, Oct. 10, through Sunday, Oct. 24. On October 24, Dr. Costel Constantin together with seven physics major and one nursing major volunteered with both Nanoscale Informal Science Education Networked/Material Research Society, and PBS WGBH/NOVA Making Stuff booths. The students who come with me are Anita Vincent-Johnson (Physics), Anthony Chieco (Physics), Jimmy Hauver (Physics), Cheyenne Shafte (Physicss), Denise McKaig (Physics), Alexandra Iuga (Physics), Christina Hanks (Physics), and Emily Schofield (Nursing). Our students explained how the properties of materials change with size. After the event, we were fortunate to be invited to the radio show “STEM SELLS” hosted by Prof. Brian Utter, and Prof. Mark Mattson from Physics and Astronomy Department. Related to this event, there is an article published in the Madison Magazine titled "Lego robotics, hydrogen cars, geospatial tech on the D.C. Mall". The article can be found at page 14, in the latest winter 2011 edition of Madison Magazine. Here I am carbon-copying the paragraph in which we were mentioned within the article “Dr. Costel Constantin (Physics and Astronomy) volunteered with both Nanoscale Informal Science Education Networked/Material Research Society and PBS WGBH/NOVA Making Stuff booths, with the help of JMU students Anita Vincent-Johnson (Physics), Anthony Chieco (Physics), Jimmy Hauver (Physics), Cheyenne Shafte (Physicss), Denise McKaig (Physics), Alexandra Iuga (Physics), Christina Hanks (Physics), and Emily Schofield (Nursing). They explained properties of carbon nanotubes, nano sands, and strengths of nanofabrics to Festival visitors.” I would like to thank all our student volunteers for doing a great job.