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Properties of Materials · Weeks 19-27

Changing Materials: Heating and Cooling

Students investigate how heating and cooling can change the properties of some materials.

Key Questions

  1. Explain how heating can change the state or properties of a material.
  2. Compare the effects of heating and cooling on different substances.
  3. Predict what might happen to a material if it is heated or cooled significantly.

Common Core State Standards

2-PS1-4
Grade: 1st Grade
Subject: Science
Unit: Properties of Materials
Period: Weeks 19-27

About This Topic

Leaders for Change focuses on individuals who worked to make the United States a fairer place for everyone. By studying leaders like Dr. Martin Luther King Jr. and Rosa Parks, students learn about the power of peaceful protest and the importance of standing up for what is right.

This topic aligns with civics and history standards regarding civil rights and democratic values. It helps students understand that laws can be changed if they are unfair and that every person has the power to make a difference. This topic is most effective when students can engage in 'fairness' simulations and structured discussions about how to solve problems in their own community.

Active Learning Ideas

Watch Out for These Misconceptions

Common MisconceptionDr. King 'fixed' everything and now everything is fair.

What to Teach Instead

Explain that while Dr. King made things much better, we still have to work every day to be kind and fair to everyone. Active 'kindness challenges' can show students that being a leader for change is an ongoing job for everyone.

Common MisconceptionRosa Parks was just 'tired' when she sat on the bus.

What to Teach Instead

Clarify that she was a brave leader who made a choice to stand up for what was right. Active role-playing of her decision can help students understand the courage it took to challenge an unfair law on purpose.

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Frequently Asked Questions

How do I explain 'segregation' to a 1st grader?
Use the word 'separation.' Explain that there used to be unfair laws that kept people apart based on the color of their skin. Use concrete examples like separate water fountains or separate seats on a bus to help them visualize why this was so unfair.
What was Dr. King's 'dream'?
His dream was that everyone would be treated fairly and judged by 'the content of their character' (how they act and who they are inside) rather than the color of their skin. This is a powerful message that 1st graders can easily understand and apply to their own lives.
How can active learning help students understand leaders for change?
Active learning, like the 'Fairness Test' simulation, allows students to 'feel' the injustice of unfair treatment. This emotional connection helps them understand why leaders like Dr. King and Rosa Parks were so important and why their work mattered so much to so many people.
How can I teach about peaceful protest?
Focus on the idea of 'using your words and your actions' to show that something is wrong without hurting anyone. Explain that by standing together and being peaceful, these leaders showed the world that their cause was right and fair.

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