In these Hero Elementary activities, children explore solid and liquid materials. They observe, compare, and describe solid and liquid materials. They sort materials as solid or liquid. They find out how hot and cold can change the state of materials.
In these Hero Elementary activities, children explore how materials change when heated and cooled. For example, if you cool a liquid, it may become solid. What happens when you reverse the process and heat the solid—does it become liquid again? Or, if you heat a solid, it may become liquid. If you cool the liquid, will it get solid again? Children will discover that some changes are reversible and others are not. You can heat ice and it becomes liquid water. If you cool the water, it freezes and becomes ice again. If you heat popcorn, it pops and it does not “unpop” if you cool it. There is no way to unpop popcorn.
Use science inquiry to explore and test different ingredients to help Ruff make, decorate, and serve cookies to his family in this kitchen science game from The Ruff Ruffman Show. Students will explore how changes to substances are sometimes irreversible.
This resource is part of The Ruff Ruffman Show Science Collection.
Experiments are cool with a curious baby polar bear and his who, what, when, where, and why questions about the three states of matter. In this interactive lesson, students get hands-on with ice and record their observations through drawing and writing.
Use text features like captions, bold print, glossary, and index to learn about the hot and cold states of water and all about penguins. Students will read an informational text on what makes water freeze, look at cool penguin pictures, learn weird penguin names, and read how penguins enjoy the water in all of its states.
Physical changes mean matter changes size or shape, not its atomic makeup. Chemical and nuclear changes alter matter on an atomic level.
The classroom resource provides a video that will explain the difference between physical and chemical changes of matter. This resource can provide background information for students before they conduct their own investigations. There is also a short test that can be used to assess students' understanding.
An object’s pH level can be tested using indicators. Objects with a low pH are acids, and those with a high pH are bases. Acids and bases react together to form water and salt.
The classroom resource provides a video that will introduce students to pH levels, acids, bases, and their possible reactions. This resource can provide background information for students before they conduct their own investigations. There is also a short test that can be used to assess students' understanding.
The teacher will present an informational text from the website, ReadWorks. The students and teacher can interact with this non-fiction text by annotating the text digitally. The students will answer the questions associated with the article as an assessment. This learning activity can be used to introduce students to the changes caused by heating or cooling water, serve as reinforcement after students have already learned this concept, or be used as an assessment at the conclusion of a lesson. This article will provide evidence to students that the physical changes caused by heating and cooling water can be reversed.
This lesson is the first in a three-part series that addresses a concept that is central to the understanding of the water cycle—that water is able to take many forms but is still water. In this lesson, students explore how water can change from a solid to a liquid and then back again.
Students will observe the amount of water in an open container over time, and they will observe the amount of water in a closed container over time. Students will compare and contrast the sets of observations over time. This lesson is the second in a three-part series that addresses a concept that is central to the understanding of the water cycle—that water is able to take many forms but is still water. In this second lesson, students will focus on the concept that water can go back and forth from one form to another and the amount of water will remain the same.
In this lesson, students will explore what happens to the amount of different substances as they change from a solid to a liquid or a liquid to solid. This lesson is the third in a three-part series that addresses a concept that is central to the understanding of the water cycle—that water is able to take many forms but is still water. In this lesson, students will investigate how melting and freezing impact three everyday items: water, chocolate, and margarine.