Natural Selection in Thrive
Lesson Overview
Title: Thrive and Survive: Modeling Natural Selection in a Digital World
Subject: Science
Age Group(s): 11–14 (Middle School Life Sciences)
Tags: natural selection, evolution, adaptation, simulation, ecosystems, chemosynthesis, STEM
Description:
This lesson uses gameplay from the evolution simulation game "Thrive" to provide a dynamic model of natural selection. Students will analyze how an organism's traits and environmental factors interact to determine its ability to survive and reproduce, connecting these observations to core principles of evolution.
Lesson Plan
Standards Aligned
- MS-LS4-4. Construct an explanation based on evidence that describes how genetic variations of traits in a population increase some individuals' probability of surviving and reproducing in a specific environment.
- MS-LS4-6. Use mathematical representations to support explanations of how natural selection may lead to increases and decreases of specific traits in populations over time.
- MS-LS4-2. Apply scientific ideas to construct an explanation for the anatomical similarities and differences among modern organisms and between modern and fossil organisms to infer evolutionary relationships.
Learning Objectives
Students will be able to:
- Identify specific environmental pressures shown in the simulation (e.g., temperature, resource availability).
- Explain how an organism's traits (e.g., movement, method of energy production) are adaptations for survival in a specific environment.
- Analyze quantitative data from the game (e.g., compound levels, population size) to explain the relationship between resource acquisition and population stability.
- Construct a basic explanation for how natural selection could cause a population to change over time based on the evidence presented in the simulation.
Notes
- This lesson uses a video of the open-source game Thrive. The gameplay demonstrates a chemosynthetic organism in a high-temperature, no-light environment, which serves as an excellent example of life in extreme conditions.
- Educators should emphasize that this is a model used to understand scientific principles.
- No prior knowledge of the game is necessary.
Materials Needed
- Computer and projector to display the gameplay video
- Student notebooks or digital documents for note-taking
- (Optional) "Analyze the Environment" handout with questions to guide student observation
- (Optional) Devices with internet access for extension activities
Lesson Duration
Total Time: 45 minutes
| Phase | Duration | Activity |
|---|---|---|
| Introduction | 5 mins | Hook students with questions about survival and adaptation |
| Guided Inquiry & Video Analysis | 15 mins | Play the video clip; students record observations about the organism and its environment |
| Collaborative Discussion | 15 mins | Small groups or class discussion connecting observations to scientific concepts |
| Exit Ticket / Assessment | 10 mins | Students write a short explanation to demonstrate their understanding |
Teaching Methods
- Inquiry-Based Learning: The lesson is driven by questions that encourage students to analyze evidence and draw conclusions.
- Gamification: Using a game as the primary text makes abstract concepts more concrete and engaging.
- Collaborative Learning: Group discussions encourage students to share ideas and build a collective understanding.
Assessment Methods
Formative: Teacher observation of student responses during the guided inquiry and collaborative discussion.
Summative: An exit ticket where students answer a prompt such as — "Using evidence from the video, explain how one trait of the organism helps it survive in its environment. Predict what might happen to the population if the environment changed (e.g., the amount of hydrogen sulfide decreased)."
Lesson Content
I. Key Teaching Points
- Point 1: An organism's survival depends on its traits being well-suited to the specific pressures of its environment.
- Point 2: All life requires energy and resources to survive and reproduce, and organisms have developed diverse strategies to acquire them.
- Point 3: Natural selection is the process where advantageous traits that improve survival and reproduction are more likely to be passed on, leading to changes in populations over time.
II. Practical Examples
For Teaching Point 1:
The video shows an environment with 0% light but a high temperature (98°C). This environmental pressure selects for an organism that does not rely on sunlight. The cell in the video is shown consuming hydrogen sulfide, demonstrating the trait of chemosynthesis — an adaptation that allows it to thrive where photosynthetic life could not.
For Teaching Point 2:
The gameplay centers on the organism's need to acquire resources. The "Compounds" panel on the left shows its internal storage of glucose and hydrogen sulfide. The player actively moves the cell through the environment to find clouds of compounds, as indicated by the "At Cursor" box. This visually represents the constant search for the energy and materials needed for life processes, which will eventually lead to reproduction (suggested by the DNA icon in the radial menu).
For Teaching Point 3:
The player's actions model the success of an individual with advantageous traits (e.g., the ability to effectively navigate and consume resources). The "Population: 1.1K" meter indicates that this species is successful. A discussion can be prompted: "What if a genetic variation gave a cell a slightly faster tail? That individual would get to resources quicker, store more energy, and likely reproduce more, passing the 'faster tail' trait to its offspring. Over many generations, the whole population might become faster." This connects the individual's success seen in the video to the long-term, population-level changes described by natural selection.
End of Lesson