## Abstract

In this chapter we discuss discrete mathematics in the school curriculum. We make the case, based on many years of curriculum research and design, that discrete mathematics is essential in a modern, robust school mathematics curriculum, and that five broad problem types emerge as ways to organize the diversity of discrete mathematics contexts that are important and appropriate for the curriculumâ€”enumeration, sequential change, relationships among a finite number of elements, information processing, and fair decision-making. In this chapter, these five problem types are briefly described and three classroom examples are provided. Subsequent chapters in this volume provide additional analysis, research, and more classroom examples.

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Hart, E.W., Martin, W.G. (2018). Discrete Mathematics Is Essential Mathematics in a 21st Century School Curriculum. In: Hart, E., Sandefur, J. (eds) Teaching and Learning Discrete Mathematics Worldwide: Curriculum and Research. ICME-13 Monographs. Springer, Cham. https://doi.org/10.1007/978-3-319-70308-4_1

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