With only about a third of students in US public schools achieving the NAEP Proficient level, many educators believe students are not getting enough reading practice. However, how much reading practice is enough? This study quantifies the relationship between the amount of book reading and the expected number of words learned. We collected 45…

Vocabulary learning constitutes an essential component of language learning and teaching. The type of input students receive is one of the factors that affect the pace and range of this learning. In the incidental vocabulary learning process, learners have been shown to benefit from exposure to a variety of input types to varying degrees. In this…