Common Core State Standards
CCSS.ELA-Literacy.L.3 Language Standards
Vocabulary Acquisition and Use
CCSS.ELA-Literacy.L.3.4 Determine or clarify the meaning of unknown and multiple-meaning word and phrases based on grade 3 reading and content, choosing flexibly from a range of strategies.
CCSS.ELA-Literacy.L.3.4c Use a known root word as a clue to the meaning of an unknown word with the same root (e.g., company, companion).