Energy | Project Based Learning
Students investigate how energy changes during chemical reactions by exploring simple, age-appropriate examples and designing a quick model or poster that shows energy in and energy out. The lesson uses project-based learning to help students connect chemistry to everyday life.
| Term | Definition |
|---|---|
| Energy | The ability to do work or cause change. |
| Chemical reaction | A process in which substances change into new substances. |
| Exothermic | A reaction that releases energy, often as heat or light. |
| Endothermic | A reaction that absorbs energy from its surroundings. |
| Reactants | The starting substances in a chemical reaction. |
| Products | The new substances formed in a chemical reaction. |
Show one simple example of energy change, such as a hand warmer, cold pack, or candle image. Ask: 'Where is the energy going?' and 'How do we know energy changed?'
Observe, think, and share quick ideas with a partner.
Explain that chemical reactions can release energy or absorb energy. Point out reactants and products using a simple diagram.
Listen, repeat key vocabulary, and label a quick example on paper.
Assign small groups to create a poster or simple model showing one reaction example and how energy moves in or out. Give directions: include the reaction, label reactants/products, show energy arrows, and write one sentence explanation.
Work in groups to design, label, and explain their chosen example.
Invite a few groups to present their model briefly. Ask the class to identify whether the example is exothermic or endothermic.
Present their work and listen to peers' ideas.
Review the main idea: chemical reactions involve energy changes that can be observed and described.
Complete a quick exit response orally or on a sticky note: 'One thing I learned about energy in chemistry is...'
Revisit the lesson objective and have students state one example of energy changing in a chemical reaction. Highlight that energy can be released or absorbed, and scientists use models and diagrams to explain these changes.
Find one everyday item or event that involves energy change and write 3-4 sentences explaining whether you think it releases or absorbs energy. Include one drawing or photo if possible.