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Lesson 1: Ways to Collect Data

About 30 minutes — Discussion-based lesson

What You Will Learn

This lesson covers:

Surveys: asking people questions

This section covers the key ideas about surveys: asking people questions. Discuss with your group or family and explore the concepts together.

Observation: watching and recording what you see

This section covers the key ideas about observation: watching and recording what you see. Discuss with your group or family and explore the concepts together.

Measurement: using tools to get exact numbers

This section covers the key ideas about measurement: using tools to get exact numbers. Discuss with your group or family and explore the concepts together.

Choosing the right method for your question

This section covers the key ideas about choosing the right method for your question. Discuss with your group or family and explore the concepts together.

Check Your Understanding

1. What are three ways to collect data?

Answer: Surveys (asking people), observation (watching and recording), and measurement (using tools to get exact numbers like height or temperature).

2. When would you use a survey instead of observation?

Answer: When you want to know what people think, prefer, or experience. You cannot observe someone's favorite color — you have to ask.

3. When would you use measurement?

Answer: When you need exact numbers — height, weight, temperature, distance, time. Measurement gives precise data that counting or asking cannot.

4. Why does the collection method matter?

Answer: Different methods give different types of data. Asking gives opinions and preferences. Observing gives behavior data. Measuring gives precise numbers. Choose the method that matches your question.

Key Takeaways

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