You can't unring a bell, but can you unmelt an ice cube? Readers consider reversible and irreversible changes with a short informational reading passage and accompanying comprehension questions.

For this reversible and irreversible changes worksheets, students examine 4 pairs of pictures and identify whether the changes shown between each pair are reversible or irreversible.

Teaching is a balancing act! Keep things on an even keel with a comprehensive equilibrium lesson plan. The resource covers reversible and irreversible reactions, Le Chatelier's Principle, and the industrial applications of equilibrium...

Students define the words "reversible" and "irreversible." They complete a worksheet that shows a number of changes. Students must decide which are reversible and which are irreversible.

Young scholars experiment with solids and liquids to find which solids will dissolve in water. This dissolution and mixtures lesson can be completed online or in class as all materials are connected to the lesson plan for both settings.

Students observe an online activity where they see some solids dissolving and some not dissolving. In this dissolving lesson plan, students learn which solids will dissolve, melt, and which won't. They will also see which effects are...

In this change learning exercise, learners look at pairs of pictures that have changed, writing either reversible or irreversible to describe the change that took place.

When an object is heated or cooled, a change occurs. Learners will work through this presentation and decide whether or not the changes are reversible. They learn about heating and cooling, then assess changes that have taken place. This...

Le Chatelier's interest in thermodynamics and building materials such as cement and plaster led to the Le Chatelier Principle in 1884. Activity 13 in a series of 36 extensively explores chemical equilibrium. Learners read about...

First and second graders recognize that sound is generated in a variety of ways, and that it comes from many different sources. They explore tone and volume, realizing that there are different ways to describe sound. Some musical...

Light is such an amazing thing! Elementary schoolers explore the wonderful world of light and shadow. The lesson is meant to be carried out on a whiteboard. Objects are placed in front of a light source, and learners must predict what...

Students examine different types of movement and causes that may affect those movements. In this online interactive forces and motion lesson, students use toy cars to observe push and pull and then make predictions and collect data...

First and second graders see that everyday objects are made from a variety of materials. They interact with objects such as keys, plastic spoons, a wooden ruler, a towel, and a plastic bag. A discussion ensues which leads them to...

In this recognizing different types of changes worksheet, students answer questions about such things as reversible change, irreversible process, climatic change, filtration process, physical change, and change in the state of a...

Students observe and record the apperacne of shadows and how their position and shpae changes during the course of the day. Students measure and record the length oof a partner's shadow at different intervals during the day. In pairs,...

Students observe an on-line activity to review the basics of electrical circuitry, then research answers to related questions on-line.In this lesson on changing components in a series circuit, students discover how different components...

Students discuss and investigate how various vehicles move. In a small groups, students then create a wheeled vehicle and find a way to make it move using various resources provided by the teacher.

Pupils investigate what happens to solids and liquids when they change from one form to another. In this states of matter lesson plan, students work in groups on a virtual experiment that requires them to collect data regarding the...

Students construct a food web to identify producer, consumer, herbivore, carnivore and predator. They complete an online activity collecting plants and animals and arranging them in the web. They describe the interdependence between...

Students examine ways for people to stay healthy, such as exercising and eating right.

Learners participate in a demonstration and complete an online activity that illustrates the earth orbits the sun once a year, and that the moon takes approximately 28 days to orbit the earth.

Young scholars examine pictures of different animals and decide if they eat meat and/or plants. They inspect models of pairs of upper and lower teeth and discuss which teeth are most useful for cutting grass and tearing meat.

Students compare the properties of rocks and relate these properties to their use. They perform a virtual experiment to describe and group rocks on the basis of their characteristics.

Fifth graders construct a food web to illustrate how animals and plants are interdependent. In this interdependence lesson, 5th graders identify how consumers, producers, herbivores, carnivores and predators are related in a habitat....