New York State Learning Standards and Core Curriculum
NY.2RF. 2nd Grade Reading Standards: Foundational Skills
Phonics and Word Recognition
2RF3. Know and apply grade-level phonics and word analysis skills in decoding words.
2RF3d. Recognize and identify root words and common prefixes (e.g. re, reread, un, undo, hop, hopping).
NY.2L. 2nd Grade Language Standards
Vocabulary Acquisition and Use
2L4. Determine or clarify the meaning of unknown and multiple-meaning words and phrases, choosing flexibly from an array of strategies.
2L4b. Determine the meaning of the new word formed when a known prefix is added to a known word (e.g., happy/unhappy, tell/retell).