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Cause and effect helps readers understand how events are connected in a story or an informational text. A cause is why something happens, and an effect is what happens because of that cause. When students notice these links, they can follow the text more clearly and understand characters, problems, and outcomes. This skill also helps with summarizing, predicting, and answering reading questions.
Readers can find cause and effect by looking for signal words and by thinking about how one event leads to another. Words like because, so, therefore, as a result, since, and which led to often give helpful clues. Sometimes the cause comes first, but sometimes the effect is stated before the cause. Strong readers pause to ask what happened and why it happened, then connect the events in order.
Key Facts
- Cause = why something happens.
- Effect = what happens as a result.
- A text may show a chain of events: Cause 1 -> Effect 1/Cause 2 -> Effect 2.
- Common signal words include because, so, therefore, as a result, since, and which led to.
- Story example: It rained all afternoon, so the soccer game was canceled. Cause = it rained all afternoon; Effect = the soccer game was canceled.
- Nonfiction example: The temperature dropped below 0 degrees C, so water froze into ice. Cause = temperature dropped; Effect = water froze.
Vocabulary
- Cause
- The reason something happens in a text.
- Effect
- The event or result that happens because of a cause.
- Signal words
- Words or phrases that help readers notice a cause and effect relationship.
- Sequence
- The order in which events happen.
- Inference
- A smart guess based on clues in the text and what you already know.
Common Mistakes to Avoid
- Mixing up the cause and the effect, which leads to reversed answers that do not match the event order or logic of the text.
- Relying only on signal words, which is wrong because some texts show cause and effect without using clue words like because or therefore.
- Choosing details that are merely next to each other in the passage, which is wrong because not every sequence of events shows one event causing the other.
- Ignoring background clues, which is wrong because readers sometimes must infer the cause when the author states only the effect.
Practice Questions
- 1 A plant did not get enough sunlight, so its leaves turned yellow. What is the cause and what is the effect?
- 2 Mia forgot to set her alarm. As a result, she missed the bus. Identify the cause and the effect.
- 3 In a story, a boy studies every night for a week and then earns a high test score. Explain how the events show cause and effect, and name one signal word that could connect them.