“The Classroom Sample Tasks blend content, practices, and concepts from both the NGSS [Next Generation Science Standards] and the Common Core State Standards. Teachers across the disciplines have collaborated to write sample tasks, which are the result of a vision of integrating science, engineering, and mathematics for classroom use.”
http://www.nextgenscience.org/classroom-sample-assessment-tasks
The site currently has 4 middle school and 5 high school tasks, in draft form. They welcome feedback on these tasks, and will be adding additional tasks, including for elementary grades.
