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Adolescents often learn science vocabulary through reading. This vocabulary is frequently characterized by multisyllabic words derived from Greek and Latin roots. While most adolescents have acquired the decoding skills to read these multisyllabic words, many students, particularly those with disabilities, cannot engage in independent word learning because they lack the skills to decode these multisyllabic words. Graphomorphemic elements of words, including affixes, support effective decoding and can eventually support word learning. This article describes an approach used to identify the most frequently occurring, stable affixes within science words so that they could be used in “big word” decoding instruction. To illustrate the approach, a subset of high frequency science words and a list of high utility, stable affixes are provided.
