One of the biggest challenges teachers now face with implementing the CCSS-M is locating worthwhile mathematical tasks.
To the rescue
The Illustrative Mathematics Project has launched a website that will eventually house multiple tasks for EVERY content standards within the CCSS-M. Currently, there are several standards for each grade level that have completed tasks posted. To view the "illustrated" standards, click on the "show only illustrated standards" in the upper right hand corner.
One of the newly posted tasks on the Illustrative Math website is a task created by Dan Meyer for 8th grade called Graduation [PDF]. It addresses 8.F.4 with a HEAVY focus on the Practice Standards. 8th grade teachers: start using this task in your classes today!