Curriculum › Grade 5 › English Language Arts

Unlocking Unknown Words

  • Grade 5
  • English Language Arts
  • L.5.4
  • Language
  • Free lesson

Aligned to L.5.4 — Common Core State Standards for English Language Arts.

What this lesson teaches

When you meet a new word, use nearby clues, familiar roots and affixes, or a dictionary. Greek and Latin roots appear in many English words.

Worked examples

Example 1

You don't know 'biography.' The root 'bio' means life and 'graph' means writing, so a biography is writing about someone's life.

Example 2

You do not know 'geology.' 'Geo' means earth and 'logy' means the study of — so geology is the study of the earth.

Example 3

Context and roots together beat either alone. If the root guess does not fit the sentence, trust the sentence.

Practice questions

  1. Guess a word's meaning from its sentence, then check it.
  2. Use a root or prefix to define a new word.
  3. Look up one word and write its meaning.

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.

▶ Watch this lesson

En español

Descifrar Palabras Desconocidas

Cuando encuentres una palabra nueva, usa las pistas cercanas, las raíces y afijos conocidos, o el diccionario. Muchas raíces griegas y latinas también aparecen en español.

Ejemplo 1: No conoces 'biografía'. La raíz 'bio' significa vida y 'grafía' significa escritura, así que una biografía es un escrito sobre la vida de alguien.

Ejemplo 2: No conoces 'geología.' 'Geo' significa tierra y 'logía' significa el estudio de — así que geología es el estudio de la Tierra.

Ejemplo 3: El contexto y las raíces juntos vencen a cualquiera por separado. Si la raíz no encaja en la oración, confía en la oración.

More Language lessons

Grammar, Conventions & VocabularyL.5.1Capitals, Commas & SpellingL.5.2Combining & Shaping SentencesL.5.3Figurative Language & Word ShadesL.5.5Using Grown-Up & Subject WordsL.5.6

Teach this lesson today

An AI tutor that guides with questions instead of just giving answers — all K–12 core subjects, every child in the family.

Start free — no card required