Copyright © American Speech-Language-Hearing Association From: Vocabulary Instruction on Sesame Street: A Content Analysis of the Word on the Street Initiative Lang Speech Hear Serv Sch. 2015;46(3):207-221. doi:10.1044/2015_LSHSS-14-0079 Legend: Target word tier flowchart. Definitions (i.e., Tier 1, Tier 2, and Tier 3) have been adapted from Bringing Words to Life: Robust Vocabulary Instruction (Chapter 1), by I. L. Beck, M. G. McKeown, and L. Kucan, 2002, New York, NY: Guilford Press. Copyright © 2002 by Guilford Press. Adapted with permission. Date of download: 10/30/2017 Copyright © American Speech-Language-Hearing Association