Investigations in Number, Data, and Space

Investigations is a focused and coherent K-5 curriculum, which was intentionally designed and sequenced to promote a deep understanding of mathematics.  The curriculum units at each grade level represent a cohesive whole.   Each successive unit builds on the previous unit both within and across strands and across grades.  The geometry and measurement, data, and patterns and functions units focus on foundational mathematical ideas and practices and also support work in the number and operations units. By teaching the Investigations curriculum as written, teachers enable students to go deeply into mathematical practices and content as identified in the Common Core State Standards (CCSS).

Six major goals guided the development of Investigations. The curriculum is designed to:

  • Support students to make sense of mathematics and learn that they can be mathematical thinkers
  • Focus on computational fluency with whole numbers as a major goal of the elementary grades
  • Provide substantive work in important areas of mathematics—rational numbers, geometry, measurement, data, and early algebra—and connections among them
  •  Emphasize reasoning about mathematical ideas
  • Communicate mathematics content and pedagogy to teachers
  • Engage the range of learners in understanding mathematics.

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ST Math