Colored vocabulary cards

Granite School District has developed colored vocabulary cards that would display beautifully in your classroom.

Rational Number Project--Great Fraction Lessons!

http://www.cehd.umn.edu/ci/rationalnumberproject/rnp1-09.html

Fourth grade teachers, here's an entire set of fraction lessons that are great!  Be sure to scroll all the way to the bottom for the flash manipulatives.

Classroom Posters for Practice Standards

Be sure to check out the Utah Education Network.  Find the free, printable classroom posters for the Practice Standards.  There's something for everyone on this site.
Classroom Standards Posters from Utah and more

Illustrative Mathematics

Illustrative Mathematics has a task for each of the standards.  Choose your grade level and standard, then choose illustrations.  That will take you to a task.
Illustrative Mathematics

More task modifications 1

Helpful Websites

Tennessee Curriculum Center

TN Core Education in Tennessee

Education Northwest

 New York City Department of Education Common Core Library

 University of Arizona Common Core Toolkit

NAEP--a great resource, especially for 4th grade and 8th grade

NAEP is especially great for fourth grade teachers as a resource because it has a large bank of performance based assessments that are already graded rubric style. You can choose the level of difficulty and the subject matter.    NAEP has a wealth of information about how we are performing state by state. The most recent results were released in May of 2012