An effective educational framework is necessary to develop the engagement of children and adults with nature. Here we show how the tools for thinking framework can be applied to this end. The tools comprise 13 sensory-based cognitive skills that form the basis for formalized expressions of knowledge and understanding in the sciences and arts. These skills are explicitly taught in some curricula. We review evidence of specific tools for thinking in the self-reported thinking processes and influential childhood experiences of prominent biologists, conservationists and naturalists. Tools such as imaging, abstracting, pattern recognition, dimensional thinking, empathizing, modelling and synthesizing play key roles in practical ecology, biogeography and animal behaviour studies and in environmental education. Ethnographic evidence shows that people engage with nature by using many of the same tools for thinking. These tools can be applied in conservation education programmes at all levels by actively emphasizing the role of the tools in developing understanding, and using them to design effective educational initiatives and assess existing environmental education.