National Library of Virtual Manipulatives
A large library of virtual manipulatives that can support a variety of mathematical explorations.

NCTM - Illuminations
NCTM resources organized by grade and mathematical strand

NCTM Standards & e-examples
An overview of the NCTM standards and access to the e-example applets and videos that go with them.

Illuminations Activities
Mathematics activities that rely on Internet-based resources.

Lesson Plans from NCTM Illuminations
A collection of Internet-based lesson plans aligned to NCTM standards.

Investigations in Number, Data, and Space
Materials about the Investigations books that we are using in this project.

CESAME Support Site for Investigations
More support materials for the Investigations curriculum.

CESAME--Discussions about the Investigations
Teacher discussion lists for Investigations.

Elementary Mathematics Specific Software
A listing of many software titles appropriate for K-5.

Problem of the Week
Math Forum offers a problem of the week for elementary students each week during the academic year.