Matter | Project Based Learning
Students explore how matter moves through living things by creating a simple food web and tracing matter from the environment into organisms and back again. Through hands-on collaboration, students explain that matter is recycled in ecosystems, not created or destroyed.
| Term | Definition |
|---|---|
| Matter | Anything that has mass and takes up space. |
| Atom | A tiny unit that makes up all matter. |
| Producer | An organism, such as a plant, that makes its own food. |
| Consumer | An organism that gets energy and matter by eating other organisms. |
| Decomposer | An organism that breaks down dead matter and returns nutrients to the environment. |
| Nutrient | A substance in food or soil that living things need to grow and survive. |
| Recycling | The process of matter moving through living and nonliving parts of an ecosystem again and again. |
Show a plant, a piece of fruit, and a photo of a decomposer (mushroom or worm). Ask students what these have in common and guide them to the idea that all are made of matter.
Think-pair-share ideas, then record one example of matter in a living thing on a sticky note.
Briefly explain producers, consumers, and decomposers. Use a simple food chain on the board and emphasize that matter changes form as it moves through organisms and the environment.
Listen, take notes, and answer quick oral questions.
Introduce the task: create a class or small-group food web poster that shows matter moving through an ecosystem. Provide roles and criteria: include at least 6 organisms, arrows showing movement of matter, and a short explanation of recycling.
Form groups, review directions, assign roles, and choose organisms for the food web.
Circulate, ask guiding questions, and support groups that need help identifying correct relationships. Prompt students to show where matter enters, moves, and returns to the environment.
Create the food web poster using cards, yarn, and labels. Write short explanations for at least two connections.
Invite groups to briefly present one connection in their model and explain how matter changes or recycles.
Present, listen to peers, and make one revision or addition based on feedback.
Use quick questions such as: Where does matter start in this ecosystem? What happens when an organism dies? Why is decomposition important?
Respond verbally or on an exit ticket.
Bring the class together to restate the main idea: matter moves through living things and is recycled in ecosystems. Ask students to complete a quick reflection: 'One way matter moves in my model is ___.'.
Formative assessment will come from teacher observation, group poster accuracy, student explanations, and an exit ticket asking students to describe how matter moves through an ecosystem and the role of decomposers.