Title: Exploring States of Matter

Grade Level: 3rd Grade

Subject: Chemistry

Duration: 45 minutes

Objective: - Students will be able to identify and describe the three states of matter (solid, liquid, gas). - Students will understand the concept of changes in states of matter. - Students will be able to differentiate between the three states of matter through hands-on activities and experiments.

Materials: - Chart paper and markers - Pictures or illustrations of solids, liquids, and gases - Various objects representing different states of matter (e.g., ice cube, water, balloon, clay) - Small containers - Hot plate or stove (for demonstration purposes only) - Safety goggles - Worksheets for students - Pencils or crayons

Procedure:

1. Engage (5 minutes): - Begin the lesson by asking students if they know what matter is and if they can give examples of different types of matter. - Show pictures or illustrations of solids, liquids, and gases and ask students to identify each state of matter. - Write down their responses on the chart paper.

2. Explore (15 minutes): - Divide the class into small groups and distribute the objects representing different states of matter. - Instruct students to observe and discuss the properties of each object and determine whether it is a solid, liquid, or gas. - Encourage students to touch, smell, and describe the objects. - After the exploration, gather the class and ask each group to share their findings.

3. Explain (10 minutes): - Introduce the concept of changes in states of matter by explaining that matter can change from one state to another. - Discuss examples of changes in states of matter, such as melting ice, boiling water, or evaporating puddles. - Use the hot plate or stove (teacher demonstration) to show the process of melting ice and boiling water, emphasizing the changes in states of matter.

4. Elaborate (10 minutes): - Provide each student with a worksheet that includes pictures of various objects. - Instruct students to identify and label each object as a solid, liquid, or gas. - Encourage students to explain their choices by describing the properties of each object.

5. Evaluate (5 minutes): - Review the worksheet answers as a class, allowing students to share their responses and explanations. - Ask students to summarize what they have learned about the three states of matter. - Assess students’ understanding through a class discussion or a short quiz.

Extension Activity: - Conduct a simple experiment to demonstrate the process of condensation. Place a cold object (e.g., a metal spoon) over a boiling pot of water and observe the droplets forming on the spoon. - Discuss the importance of safety when dealing with hot objects or substances and the need to wear safety goggles.

Note: The 5E’s lesson plan format includes the following stages: Engage, Explore, Explain, Elaborate, and Evaluate. This format promotes inquiry-based learning and encourages students to actively participate in the learning process.