Students with reading disabilities generally know fewer words (breadth) with less in-depth knowledge of those words (depth) than typical students. The present study examined the effects of a "moderately rich vocabulary instruction" in which both breadth and depth of vocabulary are addressed. Nineteen U.S. 4th- and 5th-grade students with…

Adolescent students require strategies that are tailored to the specific linguistic demands of curricular vocabulary to support their decoding, spelling, and comprehension of novel big words encountered in texts. In this article, the authors describe a morphological instruction approach for helping students navigate big words in science. Reasons…