Washington DC Academic Standards
DC.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.
DC.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).