The Internet contains a vast array of educational resources, ranging from individual activities to whole curricula. This research study used content analyses and an electronic questionnaire to investigate how and why PreK-12 educators use information from the Internet for instructional design purposes in order to inform the design of an Internet-based system that provides one-stop, any-stop access to Internet-based educational materials. Results indicate that lesson plans are the most sought-after instructional resource on the Internet. The data also revealed that, although most respondents use the Internet for instructional planning, they often consult several resources (print, electronic, and/or human) and use or adapt the information to meet their specific instructional needs. Tables and figures present data related to: elements found in instructional resources; requested information in AskERIC questions; specified information in AskERIC questions; content areas represented by questionnaire respondents; sources of information used for instructional planning; top-rated preferred information sources for instructional planning by subject area; amount of Internet use for instructional planning by subject area; critical elements of Internet-based lesson plans; ease of Internet search; amount of relevant information found; and level of satisfaction with Internet search. (Author/AEF)