K-6 Science for the Next Generation

Lesson Plans
Heating Matter – Melting and Evaporation

Learning Objectives

  • Identify the three states of matter: solids, liquids, and gases.
  • Describe the process of melting as a change from solid to liquid when heat is added.
  • Explain evaporation as the process where liquid changes to gas when heated.
  • Provide examples of everyday occurrences of melting and evaporation.
  • Understand how heat affects the change of state in matter.

Introduction and Hook

Begin the lesson by discussing the three states of matter: solids, liquids, and gases. Use everyday examples like ice, water, and steam to illustrate these states.

Go to the Lesson

Engage students with a question: 'What happens when we heat ice?' Encourage them to think about the changes they observe in their daily lives.

Direct Instruction

Explain the process of melting, using examples like ice turning into water and candle wax melting. Highlight that melting is a change from solid to liquid due to heat.

Introduce evaporation as the process where liquids change to gas when heated. Use the example of puddles drying up in the sun.

Watch the video 'Changing States of Matter' to see animated demonstrations of melting and evaporation. This video helps clarify how temperature changes affect the state of matter.

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Guided Exploration

Facilitate a discussion on how heat affects the change of state in matter. Encourage students to share examples of melting and evaporation they have observed.

Watch 'Heating Matter and Changes in State' to explore how heating affects matter. This video uses demonstrations to illustrate melting and evaporation, aiding in visual understanding.

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Hands-On Activity

Conduct an experiment where students observe ice melting and water evaporating. Have them record their observations and discuss the changes.

Use the 'States of Matter' assessment to have students describe and list examples of solids, liquids, and gases. This activity helps reinforce their understanding through written and visual tasks.

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Independent Practice

Assign students to find examples of melting and evaporation at home and document them with drawings or photos.

Encourage students to complete the 'Measuring the Volume of Liquids' assessment to understand volume measurement and challenge misconceptions about container height and volume capacity.

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Check for Understanding

Conduct a quick quiz to assess students' understanding of the processes of melting and evaporation. Use questions that require them to explain the changes in their own words.

Try the Quiz

Review and Reflection

Review key concepts by discussing the effects of heat on the states of matter. Encourage students to reflect on what they learned and how it applies to real-world scenarios.

Watch 'Solid, Liquid and Gas – The Amazing States of Matter (Quiz Edition)' to reinforce understanding through interactive quizzes and examples.

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Assessment and Extension

Use the 'What Is Matter?' assessment to evaluate students' ability to identify and differentiate between matter and non-matter in their environment.

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For further exploration, download the complete assessment pack that includes answer keys for easy correction.

Get the Assessment Pack

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