Figure Out New Words
Aligned to L.2.4 — Common Core State Standards for English Language Arts.

What this lesson teaches
You can find what a word means from the sentence, from word parts, or from a glossary.
Worked examples
Example 1
The word 'unhappy' has 'un-' meaning 'not,' so 'unhappy' means 'not happy.'
Example 2
'Rewrite' has 're-' meaning again, so it means to write again.
Example 3
An ending changes a word too. 'Care' becomes 'careful' (full of care) or 'careless' (without care) — opposite meanings from the same root.
Practice questions
- Use a sentence to guess the meaning of a new word.
- Break a word with 'un-' or 're-' into parts to find its meaning.
- Look up a word in a glossary to check 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 lessonEn español
Descubre palabras nuevas
Puedes descubrir qué significa una palabra por la oración, por las partes de la palabra o por un glosario.
Ejemplo 1: La palabra 'infeliz' tiene 'in-', que significa 'no', así que 'infeliz' significa 'no feliz.'
Ejemplo 2: 'Reescribir' tiene 're-', que significa otra vez, así que significa volver a escribir.
Ejemplo 3: Una terminación también cambia una palabra. 'Cuidado' se vuelve 'cuidadoso' (con cuidado) o 'descuidado' (sin cuidado) — significados opuestos de la misma raíz.
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