“…Rather, they should be participants in the selection of problems, the mathematising of problems, the selection of data, the selection of mathematical tools, the construction of models, among other things. This principle is not, of course, specific to climate change, but is widely proposed in different forms in relation to a problem-solving approach to mathematics teaching (see, for example, Barbosa, 2007). Active participation in mathematics is a key principle that permits students to reflect on mathematics, as discussed in the final set of principles.…”