Visual Thinking Strategies
Limted access to free materials but will be useful for generating ideas. VTS downloads include guidelines for and discussions of visual education principles.
From the website: Visual Thinking Strategies (VTS) is a research-based teaching method that improves critical thinking and language skills through discussions of visual images. VTS encourages participation and self-confidence, especially among students who struggle. VTS is easy to learn and offers a proven strategy for educators to meet current learning objectives.