Curriculum › Grade 4 › English Language Arts

What Happened and Why

  • Grade 4
  • English Language Arts
  • RI.4.3
  • Reading: Textos Informativos
  • Free lesson

Aligned to RI.4.3 — Common Core State Standards for English Language Arts.

What this lesson teaches

History and science texts don't just tell what happened — they tell why. Look for the reasons and causes behind events, steps, or ideas. Words like 'because,' 'so,' and 'as a result' often point to the why.

Worked examples

Example 1

A science text explains that a puddle disappears because the sun heats the water and turns it into vapor that floats into the air. That tells both what happened and the reason it happened.

Example 2

A history text explains that a city grew because a railroad arrived, which brought jobs, which brought families. One cause, a chain of effects.

Example 3

Some events have several causes at once. A war rarely starts for one reason, and a text that gives only one is simplifying.

Practice questions

  1. Describe something you learned in science and explain why it happens.
  2. Read about a real event and list the cause and the result.
  3. Explain the steps of how something is made and why each step matters.

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

Qué Pasó y Por Qué

Los textos de historia y ciencia no solo dicen qué pasó — dicen por qué. Busca las razones y causas detrás de los eventos, pasos o ideas. Palabras como 'porque,' 'así que' y 'como resultado' suelen señalar el porqué.

Ejemplo 1: Un texto de ciencia explica que un charco desaparece porque el sol calienta el agua y la convierte en vapor que flota en el aire. Eso dice tanto qué pasó como la razón por la que pasó.

Ejemplo 2: Un texto de historia explica que una ciudad creció porque llegó un ferrocarril, que trajo empleos, que trajo familias. Una causa, una cadena de efectos.

Ejemplo 3: Algunos sucesos tienen varias causas a la vez. Una guerra rara vez empieza por una sola razón, y un texto que da solo una está simplificando.

More Reading: Textos Informativos lessons

Facts and InferencesRI.4.1Nonfiction VocabularyRI.4.4How Nonfiction Is BuiltRI.4.5Firsthand vs. SecondhandRI.4.6Reading Charts and PicturesRI.4.7Reasons and EvidenceRI.4.8

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