The rationale and procedures involved with the instructional strategies of concept mapping and Gowin's Vee Mapping are provided in this paper. Specific directives are outlined for building concept maps and vee maps. Examples of both types of these maps are given and explanations are offered on their form and use. Concepts and activities illustrated in the maps include: (1) hydrometer/thermometer density activity; (2) seawater density (both pre and post-instructional maps); (3) hydrometer demonstration; (4) role of thermocline in summer salmon distribution, and (5) Lake Ontario salmonid research. A bibliography of nine references is provided. (ML)