Evidence of Climate Change

Learning about climate change requires students to connect abstract data with real-world impacts, which active learning makes possible. These activities transform scientific records into tangible evidence, helping students see patterns and build arguments rather than memorize facts.

• 6th Grade
• Science
• 3 activities
• 35 min–50 min

Learning Objectives

1. Analyze ice core data to identify trends in past atmospheric CO2 concentrations and global temperatures.
2. Compare tree ring width patterns to infer historical climate conditions like rainfall and temperature.
3. Explain how instrumental records provide direct evidence of recent climate change.
4. Critique common misconceptions about the causes and impacts of climate change.
5. Synthesize evidence from multiple sources (ice cores, tree rings, instrumental records) to support claims about climate change.

Document Mystery

⏱ 35 min·Pairs

Data Analysis: Ice Core CO2 and Temperature Records

Provide students with simplified graphs of CO2 concentration and temperature deviation reconstructed from Antarctic ice cores over the past 400,000 years. Students annotate cycles, identify the correlation between CO2 and temperature, and write a claim-evidence-reasoning paragraph explaining what the data shows.

Prepare & details

Explain what evidence we have that the Earth's climate has changed over time.

Facilitation Tip: During Data Analysis, circulate to listen for students connecting CO2 spikes with temperature changes, not just describing trends.

Setup: Groups at tables with document sets

Materials: Document packet (5-8 sources), Analysis worksheet, Theory-building template

• Analyze
• Evaluate
• Self-Management
• Decision-Making

Gallery Walk

⏱ 40 min·Small Groups

Gallery Walk: Multiple Lines of Evidence

Set up six stations around the room, each displaying a different type of climate evidence (ice cores, tree rings, sea level records, Arctic sea ice extent, species range shifts, glacial retreat photographs). Groups rotate with a recording sheet, summarizing what each source shows and rating how far back in time it can record.

Prepare & details

Analyze how ice cores and tree rings provide data about past climates.

Facilitation Tip: During Gallery Walk, position yourself near one poster to overhear how students justify their chosen evidence as most compelling.

Setup: Wall space or tables arranged around room perimeter

Materials: Large paper/poster boards, Markers, Sticky notes for feedback

• Understand
• Apply
• Analyze
• Create
• Relationship Skills
• Social Awareness

Socratic Seminar

⏱ 50 min·Whole Class

Socratic Seminar: Addressing Climate Change Misconceptions

Distribute a list of five common public misconceptions about climate change. Students research one in pairs, then the class convenes for a structured discussion where they present the scientific evidence that addresses each misconception. The teacher facilitates but does not lecture, drawing out student reasoning.

Prepare & details

Critique common misconceptions about climate change.

Facilitation Tip: During Socratic Seminar, step in only to redirect back to the evidence cards if conversations drift from the provided misconceptions.

Setup: Chairs arranged in two concentric circles

Materials: Discussion question/prompt (projected), Observation rubric for outer circle

• Analyze
• Evaluate
• Create
• Social Awareness
• Relationship Skills

Teaching This Topic

Teaching climate change works best when students engage with the same tools scientists use. Avoid presenting it as a debate; instead, frame it as building a case with evidence. Research shows students retain concepts better when they apply them to critique common misconceptions in real time.

What to Expect

Students will analyze data, justify claims with evidence, and critique misconceptions through discussion and writing. They should be able to explain how scientists gather and interpret climate evidence, and why current changes differ from past natural variations.

Watch Out for These Misconceptions

Common Misconception

During Data Analysis, watch for students claiming that past climate changes make current changes normal without examining the rate of change.

What to Teach Instead

Use the ice core CO2 graph to point out that while past changes took thousands of years, current CO2 rise happened in decades, and ask students to calculate the difference in rate.

Common Misconception

During Socratic Seminar, listen for students misinterpreting scientific disagreement as doubt about the existence of climate change rather than uncertainty about impacts.

What to Teach Instead

Refer to the 97% consensus statistic on the board and ask students to cite which part of the evidence they find most convincing.

Common Misconception

During Gallery Walk, notice if students dismiss proxy data as unreliable without comparing it to modern measurements.

What to Teach Instead

Have students revisit the tree ring and ice core posters to identify where these proxies overlap with direct temperature records, then ask how this validation strengthens claims.

Assessment Ideas

Quick Check

After Data Analysis, collect student responses to the CO2 and temperature graph question to check if they accurately describe the positive correlation between the two variables.

Discussion Prompt

After Gallery Walk, facilitate a brief class discussion where students share two pieces of evidence they found most convincing and explain why they chose them.

Exit Ticket

During Socratic Seminar, have students write on an index card one method scientists use to study past climates and one current climate change indicator, then collect these to assess understanding.

Extensions & Scaffolding

• Challenge: Have students create a data visualization comparing pre-industrial CO2 levels (from ice cores) with current levels to highlight the rate of change.
• Scaffolding: Provide sentence starters for discussion responses, such as 'One piece of evidence that convinced me is... because...'
• Deeper exploration: Assign a research task finding a climate proxy not covered in class, then present its reliability to peers.

Key Vocabulary

Climate Proxy	Natural archives, such as ice cores or tree rings, that scientists use to reconstruct past climate conditions before direct measurements were available.
Atmospheric CO2	Carbon dioxide gas present in Earth's atmosphere, a key greenhouse gas that influences global temperatures.
Instrumental Records	Direct measurements of climate variables like temperature, precipitation, and sea level collected using scientific instruments, typically dating back to the mid-1800s.
Greenhouse Gas	A gas in the atmosphere that absorbs and emits radiant energy, trapping heat and warming the planet. Carbon dioxide is a primary example.