Vocabulary Acquisition and Use

  1. Determine or clarify the meaning of unknown and multiple-meaning words and phrases based on grade 2 reading and content, choosing flexibly from an array of strategies.
    1. Determine the meaning of the new word formed when a known prefix is added to a known word (e.g., happy/unhappy, tell/retell).
    2. Use a known root word as a clue to the meaning of an unknown word with the same root (e.g., addition, additional).
6.3 Vocabulary Acquisition and Use
Lesson C

Understand Word Parts

Many words are formed by adding prefixes and suffixes to a root word. Understanding these word parts can help you figure out the meaning of unfamiliar words.

A prefix is a word part that is added to the beginning of a word to change its meaning.

A suffix is a word part that is added to the end of a word to change its meaning.

The root of a word is its basic meaning before a prefix or a suffix is added to it.

Click the buttons below to learn more about word parts. Start with Prefixes.