Biology · 10th Grade

Active learning ideas

Foundations of Evolutionary Thought

This topic explores the fascinating history behind one of biology's biggest ideas. We will investigate how the theory of evolution was pieced together over time by different thinkers who were observing the natural world.

• Common Core State Standards
• NGSS: HS-LS4 Biological Evolution: Unity and Diversity

• 30–60 min
• Pairs → Whole Class
• 3 activities

Activity 01

• Timeline Challenge
• 60 min · Small Groups

Timeline of a Theory

Students research key figures like Lamarck, Lyell, Malthus, Darwin, and Wallace and their contributions to evolutionary thought. They create a physical or digital timeline, placing each figure and their key ideas in chronological order to see how the theory developed.

Explain how early scientific ideas contributed to the development of the theory of evolution.

Facilitation Tip

Provide a list of key figures and guiding questions to help focus their research.

What to look for

Use an exit ticket asking students to explain the concept of a common ancestor in their own words and list one piece of evidence that supports it.

• Remember
• Understand
• Analyze
• Self-Management
• Relationship Skills

Activity 02

• Timeline Challenge
• 45 min · Pairs

Common Ancestor Detective

Using simplified phylogenetic trees of familiar organisms, students work in pairs to identify the most recent common ancestor for different groups. They must explain the evidence (shared traits) that supports these relationships.

Identify the central claims of the theory of common ancestry.

Facilitation Tip

Start with a simple, clearly labeled tree of well-known animals before introducing more complex examples.

What to look for

A short constructed response where students explain how the ideas of geologists like James Hutton and Charles Lyell helped shape Darwin's view of evolution.

• Remember
• Understand
• Analyze
• Self-Management
• Relationship Skills

Activity 03

• Timeline Challenge
• 30 min · Individual

Pattern vs. Process Card Sort

Students receive cards with statements or examples related to evolution (e.g., 'The fossil record shows change over time,' 'Organisms produce more offspring than can survive'). They must sort these cards into two categories: 'Pattern' (evidence of change) and 'Process' (mechanisms causing change).

Compare the concepts of biological evolution as a pattern and a process.

Facilitation Tip

Conclude with a whole-class discussion to review the sorting and clarify any confusion.

What to look for

Students complete a KWL (Know, Want to know, Learned) chart about the historical development of evolutionary theory at the beginning and end of the unit to track their own learning.

• Remember
• Understand
• Analyze
• Self-Management
• Relationship Skills

A few notes on teaching this unit

Start by activating prior knowledge about fossils and extinction to create a sense of mystery about Earth's past. Use a timeline activity to structure the historical narrative, showing how scientific ideas build on one another. When introducing common ancestry, use a family tree as a simple, relatable analogy before moving to more formal phylogenetic trees.

By the end of this topic, students will be able to explain how the modern theory of evolution was developed and understand its core claim: that all living things on Earth are related through common ancestry.

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Watch Out for These Misconceptions

• Evolution is 'just a theory,' which means it's an unproven guess.

  In science, a theory is a robust, well-substantiated explanation for a wide range of observations, built upon extensive evidence and tested hypotheses. The theory of evolution is supported by overwhelming evidence from genetics, the fossil record, anatomy, and more.

• Individual organisms can evolve during their lifetime.

  Evolutionary change occurs in populations over generations, not within an individual's lifespan. An individual's genetic makeup is fixed, but the frequency of certain genes in a population can change over time through processes like natural selection.

• Evolution is a linear ladder of progress with humans at the top.

  Evolution is a branching process, more like a tree than a ladder. There is no predetermined goal or 'pinnacle' of evolution. Fitness is relative to a specific environment, and different lineages adapt in different ways.

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Methods used in this brief

• Timeline Challenge