Which instructional method is best for defining a vocabulary word during a reading session?

Point-of-Contact Teaching is particularly effective for defining vocabulary words during a reading session because it focuses on providing immediate clarification and context to words as they arise in the text. This method supports the idea that vocabulary acquisition is most effective when words are linked to meaningful experiences, ensuring that learners make connections between the new words and the context in which they occur. By addressing vocabulary at the moment it is encountered in reading, students can deepen their understanding and retention of the word's meaning.

This method also fosters engagement and interaction, allowing students to ask questions and discuss meanings collaboratively, which can further enhance their comprehension. In contrast, the other methods may not provide the same level of immediate relevance or connection to the text being read, potentially leading to less effective learning outcomes in the context of defining vocabulary.