The purpose of this replication study was to examine the impact of the Teacher Study Group (TSG) professional development in vocabulary on first-grade teachers' knowledge of vocabulary instruction and observed teaching practice, and on students' vocabulary knowledge. Sixty-two schools from 16 districts in four states were randomly assigned to…

Learning motivation has a significant effect on student learning, which is a key determinant of academic performance and creativity. It is increasingly popular and important to cultivate learning motivation in schools. To consider this trend, a long-term intervention program named "Learn to Think" (LTT) was designed not only to improve…

The notably low level of reading proficiency across the United States, combined with the known importance of teachers for student success, necessitates improved understanding of teachers' knowledge, how it is acquired, and its role in instruction. This study had four goals: (1) identify whether domains of content knowledge and pedagogical content…