To be mathematically literate means to be able to think critically about societal issues on which mathematics has bearing so as to make informed decisions about how to solve these problems. Dealing with such complex problems through interdisciplinary approaches, mirroring real-world problems requires innovative ways of planning and organizing mathematical teaching methods. Navigating our world means being able to quantify, measure, estimate, classify, compare, find patterns, conjecture, justify, prove, and generalize within critical thinking and when using critical thinking. Therefore, making decisions, even qualitatively, is not possible without using mathematics and critical thinking. Thus, teaching mathematics should be done in interaction with critical thinking along with a decision-making process. They can be developed into the mathematical context, so that there is no excuse to not explicitly support students to develop them.