From the authors observations and those of Kinchin (2001) teachers may know about concept mapping but they do not seem to use it as a consistent, effective strategy. The authors argue that the concept mapping may be better understood by using an expanded definition of traditional literacy, listening, speaking, reading and writing; to include visualizing, visual representation, and technological literacy Sinatra (1986). This ethnographic case study examines the use of concept mapping and collaborative learning strategies in the content area of marine ecology in high school science classrooms. To support students’ understanding of science concept and the improvement of writing students began with a field trip to study inter-coastal zones and follow-up laboratory activities, use of digital image analysis, and collaborative group work. Key vocabulary were identified to begin concept maps, and more vocabulary was added to support multiple revisions of concept maps with concept map software, and culminated with students’ writing. Concept mapping integrated with collaborative learning was used to engage students to construct and re-construct their understanding of a complex scientific concept, the energy cycle. The results showed that students benefited from the combination of collaborative learning and concept maps to focus their writing on key ideas, to organize their ideas, and include specific details. However, the interpretation and integration of quantitative data and laboratory results was not as consistent. Most importantly, initial concept maps and revisions provided the teacher with evidence of student learning in the form of formative assessment products, to guide teachers’ focused feedback and clarify specific ideas for re-teaching, as well as students’ self-assessment. The authors provide examples of concept maps and graphic organizers as formative assessment of students’ knowledge, what Novak (1998) calls heuristic or “facilitative tools,” and as visual representations and structures to provide flexible ways supporting learners’ meaningful learning through speaking, writing and in visual forms (Sinatra, 2000; Mintzes, Wandersee, and Novak, 2004).