[Solved] The most frequently used evaluation method in preschools is the portfolio method. Boolean Operator: A logical operator used in search engines, programming, and mathematics to perform logical operations such as AND, OR, and NOT. Wildcard: A character used in search functions to represent one or more other characters, facilitating flexible and broad search criteria. Adult Content: Material deemed suitable only for adults due to its explicit or mature nature, including but not limited to pornography and graphic violence. Web Searches: The act of looking for information on the internet using search engines.