Unit 21: Foundations of Scientific Inquiry and Experimentation

Day 3 of 30

Distinguish between observation and inference

3-5Science

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Learning Objective

Students will be able to distinguish between observation and inference.

Today's Lesson

In this lesson, we'll explore how to distinguish between observation and inference. Scientific inquiry allows us to investigate and explain natural phenomena.

Observation is using your senses (sight, hearing, touch, smell, sometimes taste) to gather information directly. For example: "The liquid is clear." Inference is using observations plus what you already know to make a logical conclusion. For example: "The liquid is water" (you inferred based on it being clear, but didn't test it). Scientists make observations first, then inferences. Good scientists check their inferences with more evidence!

As you work through today's material, pay attention to the examples and try to identify the patterns or strategies being used. This will help you apply these concepts to new problems.

Take notes on key points and make connections to what you've already learned in previous lessons.

Key Terms
Observation

Careful examination using the senses or instruments

Inference

Drawing conclusions from evidence and reasoning

Activities
Instructions
1. Read the background information on distinguish between observation and inference. 2. Form a hypothesis before beginning. 3. Conduct the investigation following procedures. 4. Record observations and analyze results.
Materials Needed
  • Lab notebook
  • Investigation materials
  • Safety equipment if needed
Practice Problems
1

Based on today's lesson, what is one thing you observed or learned?

Hint: Think about the main topic.
2

How could you test or investigate this topic further?

Hint: What experiment could you do?
3

Why is this topic important in the real world?

Hint: Think about everyday applications.

Teaching Tip

For this age group: Balance direct instruction with collaborative activities. Allow students to explain their thinking and make connections to prior knowledge when exploring distinguish between observation and inference.

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