Unit 22: Matter and States of Matter

Day 6 of 30

Measuring volume of irregular solids

3-5Science

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Learning Objective

Students will be able to measure volume of irregular solids.

Today's Lesson

In this lesson, we'll explore measuring volume of irregular solids. Scientific inquiry allows us to investigate and explain natural phenomena.

Matter is anything that takes up space and has weight. Matter exists in three main forms (called states): solid, liquid, and gas. A solid keeps its shape (like a rock or ice cube). A liquid flows and takes the shape of its container (like water or juice). A gas spreads out to fill its container (like air or steam). Matter can change from one state to another when heated or cooled!

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
Volume

The amount of three-dimensional space occupied

Investigate

To examine systematically through observation and experiment

Activities
Instructions
1. Read the background information on measuring volume of irregular solids. 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

Name one example of each: solid, liquid, gas.

Hint: Look around the room for ideas.
2

What happens to ice when it gets warm?

Hint: Think about what ice becomes.
3

Why does a balloon float when filled with helium?

Hint: Compare helium to regular air.

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 measuring volume of irregular solids.

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