Engaging in the Fight Against Extinction Unit Driving Question: How can we, as planetary stewards, take an active role in saving species from extinction?
The Sixth Mass Extinction? Lesson Driving Question: How have humans impacted Earth for better and for worse?
1. Introduce students to mass extinctions through an inquiry discussion focused on the Permian Extinction.
- Begin by showing students the first 1:30 minutes of the video, Ancient Earth: The Permian (13:27).
- Using the think-pair-share method, have students partner up to determine what could have happened to cause the extinction of nine out of 10 plant and animal species alive during the Permian period. Record and display partner theories to the following questions:
- Why would multiple plant and animal species get wiped out together within the same ancient ecosystem?
- What possible catastrophic natural disasters might have caused mass extinction (share examples, if necessary)?
- How might the extinction of one species affect other species?
2. Have students investigate multimedia resources to build their knowledge of the five mass extinctions.
- Distribute the Five Mass Extinctions Four-Square and divide the class into teams of three to research each of the five mass extinctions.
- Number groups from one to five to determine each group’s focus, then have each student in the group use one of the following resources:
- Have students fill in their Five Mass Extinctions Four-Square handout with information from their assigned source.
- After reading their resource, have students collaborate, sharing their combined knowledge to complete a large Four-Square on chart paper.
- If multiple teams researched the same mass extinction, combine the teams for this portion of the step.
- Have each mass extinction team present their four-square and share their learning with the rest of the class.
3. Facilitate a whole-class discussion to guide students’ analysis of past extinctions and predictions about future mass extinctions.
- Conduct a class discussion around the following questions:
- Looking across all of these extinctions, do they have anything in common?
- Do you think any of the conditions that led to a mass extinction are present today?
- Have you heard about any species that are in danger of extinction? What is causing that danger?
4. Introduce the unit’s driving question, the lesson’s driving question, and the planetary stewardship project that will anchor all unit learning objectives together.
- As a class, return to the Mass Extinctions infographic and read about the sixth mass extinction.
- Lead a class discussion on the causes and preventative measures for mass extinction. Ask:
- What kinds of things do humans do that would contribute to mass extinction?
- What kinds of things do humans do that might save the planet from a mass extinction?
- Share with students the driving questions for the unit and lesson.
- Unit Driving Question: How can we, as planetary stewards, take an active role in saving species from extinction?
- Lesson Driving Question: How have humans impacted Earth for better and for worse?
- Define for students what it means to be a planetary steward.
- Planetary stewardship is taking action to shape the trajectory of change on the planet to enhance the sustainability of both human well-being and the planet’s ecosystems and nonliving resources.
- Give students an opportunity to provide examples of how they are planetary stewards or how people might demonstrate planetary stewardship.
- Have students choose either the unit or lesson driving question and, with a partner, come up with an initial response to the question. Have students share their initial responses as a class and record student thinking to revisit later in the lesson.
Five Mass Extinctions Four-Square: As student teams present their collaborative Four-Square charts to the class, evaluate the thoroughness with which each team uses the provided graphic organizer to construct its supporting evidence into an organized, coherent, and presentable argument that expresses the following: the primary reason(s) for their assigned mass extinction; inferences about the extinction’s effects, and possible factors, if any, that might have mitigated or prevented tragedy.
Subjects & Disciplines
- U.S. History
- Project-based learning
- Cooperative learning
- Multimedia instruction
21st Century Student Outcomes
- Information, Media, and Technology Skills
- Learning and Innovation Skills
- 21st Century Themes
Critical Thinking Skills
- Geographic Skills
Connections to National Standards, Principles, and Practices
Common Core State Standards for English Language Arts & Literacy
- CCSS.ELA-LITERACY.WHST.6-8.9: Draw evidence from informational texts to support analysis, reflection, and research.
The College, Career & Civic Life (C3) Framework for Social Studies State Standards
- D2.His.14.6-8: Explain multiple causes and effects of events and developments in the past.
What You’ll Need
Materials You Provide
- Butcher paper
- Chart paper
The resources are also available at the top of the page.
- Internet Access: Required
- Tech Setup: 1 computer per learner, 1 computer per pair, Interactive whiteboard, Monitor/screen, Projector
- Heterogeneous grouping
- Small-group learning
- Small-group work
More than 90 percent of all organisms that have ever lived on Earth are now extinct. The planet’s five mass extinctions resulted in the disappearance of 50-90 percent of all species within a span of 500 million years—a large span of time to humans, but in the blink of an eye in geological terms.
Earth’s first five mass extinction events were:
- Ordovician, ~444 million years ago, ~86 percent of species lost
- Devonian, ~375 million years ago, ~75 percent of species lost
- Permian, ~252 million years ago, ~96 percent of marine species lost
- End Triassic, ~200 million years ago, ~80 percent of species lost
- Cretaceous, ~66 million years ago, ~76 percent of all species lost
Recommended Prior Activities
period of time during which human activities have impacted the environment enough to constitute a distinct geological change.
all the different kinds of living organisms within a given area.
organism threatened with extinction.
process of complete disappearance of a species from Earth.
extinction event in which a large number of species go extinct in a relatively short period of time.
last geologic period of the Paleozoic Era.
group of similar organisms that can reproduce with each other.
responsible management to ensure benefits are passed on to future generations.
- World Atlas: Timeline of Mass Extinction Events on Earth
- National Geographic: What Is Extinction? The Answer is Complicated
- National Geographic: What are Mass Extinctions and What Causes Them?