The "Sort-It-Out" Model Activity is part of Workshop One and contains the following sorts:
More information about the educational research behind this sorting strategy:
Getting Acquainted with the Essential Nine by Laura Varlas summarizing the main ideas of Robert Marzano’s study of the nine instructional strategies that are most likely to improve student achievement across all content areas and across all grade levels.
The first chapter of Classroom Instruction That Works: Research-Based Strategies for Increasing Student Achievement by Robert J. Marzano, Debra J. Pickering and Jane E. Pollock is available online at www.ascd.org (Choose publications, books, browse by author, Marzano).