Welcome to Investigations

Investigations is a complete K-5 mathematics curriculum, developed at TERC in Cambridge, Massachusetts. It is designed to help all children understand fundamental ideas of number and operations, geometry, data, measurement and early algebra. Learn More »

Learn More

Investigations and the Common Core

The authors of Investigations have developed materials to support teachers and schools that use Investigations to implement the Common Core State Standards. Learn More »

Using Investigations to Implement the Common Core

The authors of Investigations have developed a professional development experience -- a one-day institute and several follow-up webinars -- focused on how Investigations and the newly developed companion materials align with the Common Core State Standards for Mathematics and support teachers as they implement the CCSS in their classrooms and schools. Learn More »

Professional Development by TERC

Read about workshops and institutes (pdf) designed by the authors of Investigations, or visit the Investigations Workshops website.

News and Events

View information about news and upcoming events.

Investigations in Number, Data, and Space was developed at TERC and funded in part by the National Science Foundation.