Obtain, evaluate, and communicate information about changes in matter caused by heating or cooling. Emphasize that some changes can be reversed and some cannot. Examples of reversible changes could include freezing water or melting crayons. Examples of irreversible changes could include cooking an egg or burning wood. (PS1.B)

Science

• The second-grade child has learned that heating or cooling can cause changes in matter.
• They understand that some changes can be reversed, such as freezing water and melting crayons.
• They also know that some changes cannot be reversed, like cooking an egg or burning wood.
• The child has learned to obtain, evaluate, and communicate information about these changes in matter.

For continued development, encourage the child to explore different materials and observe how they react to heating or cooling. They can use various objects like chocolate, butter, or even different types of clay. This will help them understand how different materials respond to temperature changes and further their knowledge about reversible and irreversible changes in matter.

Book Recommendations

• What Happens to a Hamburger? by Paul Showers: This book explores how cooking changes the state of food and explains why it cannot be reversed.
• Ice Cream: The Full Scoop by Gail Gibbons: This book explains the science behind making ice cream and how freezing affects the ingredients.
• From Seed to Pumpkin by Wendy Pfeffer: While not directly related to heating or cooling, this book introduces the concept of irreversible changes by exploring the life cycle of a pumpkin from seed to fruit.