You can add comments to the guest book, and there is an interactive science quiz. The Bond-it program I tried was very interactive. The site's use of the technology is inconsistent. The demonstration page is all text. But allowing users to try and download programs is a great use of the web.
Science is Golden .
The navigation of this site is difficult. The introduction page gives very little information, but several links, including to a home page. The home page has an endless list of links, with more links grouped at the bottom, but no table of contents. All links are text, in all different colors, some don't work, some take forever to load, and some are to small illustrations that take up less than one fourth of the page, making one wonder why not just put them on the original page. The author is a former construction worker, who became interested in science education and now travels in an old car painted like a periodic table, and gives lectures at schools, ACS meetings, and education association conventions.