The phrase "ages and skill levels" refers to a range of time periods or abilities that are being considered. It can be used in various contexts, such as when discussing historical events, educational programs, or entertainment options. For example, when talking about the history of art, one might say that an exhibit covers "ages and skill levels," meaning it includes works from different time periods and by artists with varying degrees of expertise. Similarly, a program designed for children may be described as catering to "ages and skill levels" if it offers activities appropriate for kids of different ages and abilities.