Karen Elizabeth Kolek and Grant Koslowski were married by the Rev. Dennis F. Fronckowiak at 1:30 p.m. Saturday in Our Lady of Czestochowa Catholic Church, North Tonawanda. A reception was given in Harry's Harbour Place Grille for the daughter of Ellen Kolek of Williamsville and Lawrence Kolek of Clovis, N.M., and the son of William and Gail Koslowski of Grand Island. A graduate of North Tonawanda High School and Niagara University, the bride has a master's degree from University at Buffalo. She teaches fourth grade in Central Avenue Elementary School, Lancaster. The bridegroom, a graduate of Grand Island High School, is Buffalo sales representative of Physicians Sales and Service. They will live on Grand Island after a trip to Puerto Vallarta, Mexico.