This resource guide should be used with the Infant/Toddler Environment Rating Scale-Revised edition. It explains why each item is important, what is needed to meet the requirements for each item, and how to score. The format of the book is organized to match the format of the ITERS-R, by subscale, item, and indicator. It gives clear, print explanations of how each indicator within each item is to be interpreted. More than 800 color photographs of real-world settings, with captions, illustrate the text.