is also a member of the TriUniversity Group, a partnership between the University of Guelph, University of Waterloo and Wilfrid Laurier University. The group provides students and researchers at all three universities with access to all of the collections and services. The group also operates the TUG Annex, a repository for less-used library resources from the three universities. University of Waterloo also operates the Earth Sciences Museum, on campus in the Centre for Environmental Information Technology. It is mainly used as an earth-science teaching museum for local schools and natural-science interest groups in southern Ontario. The main exhibits cover the Great Lakes, rocks and minerals, dinosaurs and ice age mammals. The museum's fossil exhibit includes a complete cast of an Albertosaurus and an authentic skeleton of a Cave bear. The museum also houses an interactive, simulation mining tunnel which aims to teach sustainable mining practices. Also owned and operated by the university is the Museum of Vision Science, which is at the university's School of Optometry building. The university had previously operated the Elliott Avedon Museum and Archive of Games, created by the Department of Recreation and Leisure Studies and previously managed by the university's Faculty of Applied Health Sciences. Due to a lack of specific academic interest, in 2009, the decision was made to close the museum and transfer the collection elsewhere. Housing and student facilities The university has eight student residences: the Minota Hagey Residence, UW Place, Village 1 (the university's first residence), Ron Eydt Village, Mackenzie King Village, Columbia Lake North and South, and Claudette Millar Hall. In addition to the eight main campus residences, students may also apply to live at any of the university's affiliated college residences. The first residence built was Village 1, completed in 1966. Ron Eydt Village was still known as Village 2 in 1995 but had been renamed by 2000. The largest residential village at the university is UW Place, which houses 1,300 first-year students and 350 upper-year students, while the smallest residence is the Minota Hagey Residence, which houses 70 students and is almost exclusively for upper-year students. In September 2010, 24.9 percent of the undergraduate population lived on campus, including 71.1 percent of first-year students. Residents are represented by two residential councils at the university, South Council which represents the students at UW Place, and North Council which represents the remaining residential villages. Each council organizes their own events