Oregon Common Core Standards
OR.CC.2.L. Language Standards
Vocabulary Acquisition and Use
2.L.4. 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.
2.L.4.b. Determine the meaning of the new word formed when a known prefix is added to a known word (e.g., happy/unhappy, tell/retell).
OR.CC.2.RF. Reading Standards: Foundational Skills
Phonics and Word Recognition
2.RF.3. Know and apply grade-level phonics and word analysis skills in decoding words.
2.RF.3.d. Decode words with common prefixes and suffixes.