In what way do affixes contribute to vocabulary development for students?

Affixes, which include prefixes and suffixes, play a crucial role in vocabulary development by equipping students with strategies to define unfamiliar words. When students learn to recognize and understand the meanings of common affixes, they can break down complex words into their constituent parts—root words and affixes. This analytical skill allows them to infer meanings of new words they encounter, making it easier to comprehend texts and enhance their overall vocabulary.

For instance, knowing that the prefix "un-" means "not," students can deduce that "unhappy" means "not happy." Similarly, understanding the suffix "-ing" can help them identify ongoing actions when attached to a verb, like "running" indicating that the action is currently taking place. By leveraging these strategies, students not only expand their word knowledge but also become more independent learners and readers, capable of tackling language with greater confidence.