Melting and Freezing
Students will observe and describe the processes of melting and freezing, understanding them as reversible physical changes.
Key Questions
- Explain what causes a solid to melt and a liquid to freeze.
- Compare the energy changes involved in melting versus freezing.
- Predict how different substances might melt or freeze at varying temperatures.
Ontario Curriculum Expectations
Suggested Methodologies
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Planning templates for Science
5E Model
The 5E Model structures lessons through five phases (Engage, Explore, Explain, Elaborate, and Evaluate), guiding students from curiosity to deep understanding through inquiry-based learning.
unit plannerThematic Unit
Organize a multi-week unit around a central theme or essential question that cuts across topics, texts, and disciplines, helping students see connections and build deeper understanding.
rubricSingle-Point Rubric
Build a single-point rubric that defines only the "meets standard" level, leaving space for teachers to document what exceeded and what fell short. Simple to create, easy for students to understand.
More in Matter and Its Properties
Properties of Solids
Students will identify and describe the observable properties of various solid objects, such as shape, texture, and hardness.
2 methodologies
Properties of Liquids
Students will explore the characteristics of liquids, including their ability to flow and take the shape of their container.
2 methodologies
Properties of Gases
Students will investigate the properties of gases, observing how they fill containers and are often invisible.
2 methodologies
Evaporation and Condensation
Students will explore evaporation and condensation as parts of the water cycle and as reversible changes of state.
2 methodologies
Dissolving and Mixtures
Students will investigate how some solids dissolve in liquids to form mixtures, and how these mixtures can sometimes be separated.
2 methodologies