The Angkor Dance Troupe Inc., masters of Cambodian dance, will hold two performance workshops in the Bates College Benjamin Mays Center on Friday, Dec. 4, from 5:30 to 6:30 p.m. and from 6:45 to 7:45 p.m. The public is invited to participate free of charge, and those interested should register by calling 207-786-8215.