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Texas Essential Knowledge and Skills (TEKS)

Roots & Affixes

Grade: 4th Grade



demonstrate and apply phonetic knowledge by:
  • (i) decoding words with specific orthographic patterns and rules, including regular and irregular plurals;

  • (ii) decoding multisyllabic words with closed syllables; open syllables; VCe syllables; vowel teams, including digraphs and diphthongs; r-controlled syllables; and final stable syllables;

  • (iii) decoding words using advanced knowledge of syllable division patterns such as VV;

  • (iv) decoding words using knowledge of prefixes;

  • (v) decoding words using knowledge of suffixes, including how they can change base words such as dropping e, changing y to i, and doubling final consonants; and

  • (vi) identifying and reading high-frequency words from a research-based list;




determine the meaning of and use words with affixes such as mis-, sub-, -ment, and -ity/ty and roots such as auto, graph, and meter; and

4th Grade Reading - Roots & Affixes Lesson
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