The Investigations Center for Curriculum and Professional Development is dedicated to advancing the teaching and learning of mathematics for all students and teachers. Home to the elementary mathematics curriculum, Investigations in Number, Data, and Space, the Center offers information and resources about the curriculum. We have over 20 years of experience developing and providing professional development for teachers, coaches, and administrators, and offering ongoing implementation support for schools and districts. Center News »
Investigations 3 was developed at TERC and is based in part on work supported by the National Science Foundation. It is published by Pearson. More About These Organizations »
Investigations 3 is a focused, coherent, and rigorous K-5 mathematics curriculum. Fully aligned to the content and practice standards of the Common Core State Standards (CCSS), deep and careful attention is paid to mathematics content and to student thinking and understanding. Making sense of mathematics is the heart of the work, for students and teachers.
The culmination of over 25 years of research and development aimed at improving the teaching and learning of elementary mathematics, Investigations 3 maintains and builds on the philosophy and pedagogy of the first and second editions, and continues to be based on the work of real teachers and students. The goals remain the same, as do the underlying guiding principles.
The History of Investigations
There have been 3 editions of Investigations in Number, Data, and Space, spanning 25 years of research and development. Each edition was field tested in a range of classrooms. Between periods of development, our work focused on supporting and learning from educators who were using Investigations to improve the teaching and learning of elementary mathematics.