Ecosystems | Whole Class
Students explore how ecosystems work by designing, building, and testing a simple robotics-inspired model of a habitat. They use block-based coding or a programmable device to simulate how organisms respond to changes in light, moisture, or movement in an ecosystem. The lesson emphasizes systems thinking, cause and effect, and how robots can model environmental conditions and animal behavior.
| Term | Definition |
|---|---|
| ecosystem | A community of living things and nonliving parts of an environment that work together. |
| sensor | A part of a robot that detects changes in the world, such as light or movement. |
| habitat | The place where a living thing lives and gets what it needs. |
| adaptation | A feature or behavior that helps an organism survive in its environment. |
| model | A simpler version of something used to study or explain how it works. |
| system | A set of connected parts that work together for a purpose. |
Show two habitat images and ask: What living and nonliving parts do you notice? How might a change affect animals or plants here? Introduce the idea that robots can model changes in ecosystems.
Turn and talk, then share observations about parts of an ecosystem and possible changes.
Demonstrate a simple sensor response, such as a robot moving when light changes or stopping when an object is close. Connect the sensor input to an ecosystem condition like sunlight, water, or space.
Watch, predict what the robot will do, and identify the input and output.
Present the challenge: design a robot or coding model that represents one ecosystem interaction, such as a plant responding to sunlight, an animal moving toward water, or a habitat changing when conditions shift. Review success criteria and safety expectations.
Work as a whole class to brainstorm ideas, choose one ecosystem condition, and sketch a simple design plan.
Circulate, prompt thinking, and help students connect the sensor input to the chosen ecosystem idea. Encourage teams or the whole class to test one change at a time.
Build the model, write simple code, and test how the robot responds to the selected condition.
Ask students to explain what happened, what worked, and what needs improvement. Model how to use evidence to revise a design.
Record observations, make one improvement, and retest the model.
Lead a brief share-out. Ask students how their robot helped them understand ecosystems and system interactions.
Present the model and explain how it represents a real ecosystem relationship.
Review the big idea: ecosystems are systems, and robots can help model how changes in one part affect another. Have students complete one final sentence: 'My robot helped me understand that in an ecosystem, when ____, ____ happens.'