I Can Common Core standards for grades kindergarten through 5! Includes I Can standards for kindergarten, first grade, second grade, third grade, fourth grade and fifth grade. All free from www.thecurriculumcorner.com.
New York City Department of Education has develop common core standards units that include the task, a rubric, samples of student work, and supporting materials for the unit. A video introduction is available on the site to walk new users through the available resources, including how to navigate the online interactive for student work.