English Language Arts (2021) Grade(s): 1

ELA21.1.12b

Identify meaningful parts of words (morphemes) and use them as clues to the meaning of unknown words, including frequently occurring affixes and inflections -s, -es, -ed, -ing, -er, and -est.

Examples: Explain that adding suffix -s changes a singular noun to a plural noun and adding suffix -ed changes a verb to past tense.

Unpacked Content

Knowledge

  • Words are made of meaningful word parts called morphemes.
  • Morphemes can provide clues about the meaning of a word.

Skills

  • Recognize meaningful parts of words (morphemes).
  • Utilize morphemes as clues to identify the meaning of unknown words.
  • Use affixes as clues to the meaning of unknown words.
  • Identify frequently occurring root words and their inflectional forms.

Understanding

  • Identifying root words and affixes provide clues to the meaning of unknown words and phrases.

Vocabulary

  • Meaningful word parts
  • Morphemes
  • Unknown words
  • Affixes
  • Inflections
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