Curriculum › Grade 12 › English Language Arts

Unlocking Unknown Words

  • Grade 12
  • English Language Arts
  • L.11-12.4
  • Language
  • Free lesson

Aligned to L.11-12.4 — Common Core State Standards for English Language Arts.

What this lesson teaches

Meet an unfamiliar word by working the evidence in order — context clues in the sentence, then the Greek or Latin roots and affixes inside the word, then a reference to confirm. For multiple-meaning words, let the surrounding subject decide which sense applies.

Worked examples

Example 1

Facing 'the treaty was untenable,' a reader sees 'un-' (not) plus a root shared with 'tenant' and 'retain' (to hold), infers 'unable to be held,' and confirms it means 'not defensible' — the parts predicted the meaning before the dictionary settled it.

Example 2

Facing perfunctory in a sentence about a safety inspection, split it: per- (through) plus funct- (perform, as in function) plus -ory. Something performed all the way through — but only just. The dictionary sharpens it to done without care or interest, and the inspection now reads as a box ticked rather than a check made.

Example 3

Common mistake: trusting a guess without testing it in the sentence. Substituting your inferred meaning back in is a two-second check that catches most errors: if intractable meant easily handled, the sentence about a dispute that lasted nine years would not make sense. When the substitution produces a sentence the author would not have written, the guess is wrong and the dictionary is worth the interruption.

Practice questions

  1. Take an unfamiliar word in a sentence and state your best guess from context alone.
  2. Break the word into affixes and roots and revise your guess based on the parts.
  3. Explain how you would confirm the meaning and how you would choose between two senses of a multiple-meaning word.

Watch the lesson

Every lesson comes with a video taught in English and Spanish — the same video the QR code in the printed workbook opens.

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En español

Descifrar Palabras Desconocidas

Enfrenta una palabra desconocida trabajando la evidencia en orden — las pistas del contexto en la oración, luego las raíces griegas o latinas y los afijos dentro de la palabra, y después una referencia para confirmar. Para palabras con varios sentidos, deja que el tema alrededor decida cuál aplica.

Ejemplo 1: Ante 'el tratado era insostenible', un lector ve 'in-' (no) más una raíz compartida con 'sostener' y 'sostén', infiere 'que no se puede sostener' y confirma que significa 'no defendible' — las partes predijeron el significado antes de que el diccionario lo fijara.

Ejemplo 2: Ante perfunctorio en una frase sobre una inspección de seguridad, divídelo: per- (a través) más funct- (realizar, como en función) más -orio. Algo realizado de principio a fin — pero apenas. El diccionario lo afina a hecho sin cuidado ni interés, y la inspección se lee ahora como una casilla marcada y no como una revisión hecha.

Ejemplo 3: Error común: confiar en una conjetura sin ponerla a prueba en la oración. Sustituir tu significado inferido de vuelta es una comprobación de dos segundos que atrapa casi todos los errores: si intratable significara fácil de manejar, la frase sobre una disputa que duró nueve años no tendría sentido. Cuando la sustitución produce una oración que el autor no habría escrito, la conjetura está mal y el diccionario vale la interrupción.

More Language lessons

Command of Conventions for College and CareerL.11-12.1Punctuation That Controls MeaningL.11-12.2How Language Functions in ContextL.11-12.3Figurative Language and Fine DistinctionsL.11-12.5Academic and Domain Vocabulary for CollegeL.11-12.6

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