This unit will help 4th or 5th grade teachers prepare students to explore two big questions related to the Earth’s changing climate. The primary goal is to nurture an understanding of the element carbon, Earth’s carbon cycle, and how carbon dioxide and other gases contribute to the planet warming greenhouse effect of Earth’s atmosphere. The questions are:

1) What is carbon and why are all living things on Earth considered to be carbon-based lifeforms?

2) What is the greenhouse effect and why should we care about how much carbon is in our atmosphere?

These questions align with the Next Generation Science Standards (NGSS) for 4th grade that many states have adopted or adapted.1 An annotated list of the applicable NGSS and state science standards can be found in the appendix of this curriculum unit.

Under the NGSS, 4th grade students study concepts related to energy and learn that all fuels used to meet our continuously growing energy demand are derived from natural resources. Consequently, the production and usage of some energy resources adds more carbon dioxide to Earth’s atmosphere. Students are just beginning to develop an understanding of how human activities can impact the Earth and result in either positive or negative consequences.

This lesson plan has students working in small groups to research the Mountain Pine Beetle in Colorado and other inter-mountain Western states. Students identify the factors that control pine beetle population and research how warmer winters and decreasing spring snowpack allow the population of pine beetles to expand.

SYNOPSIS: This lesson promotes students' understanding of the power and influence of the media. Students will leverage this understanding to develop their own media campaigns for their reimagined metro systems.

SCIENTIST NOTES: This lesson enables students to reimagine and pitch ways to advertise public transportation as a key strategy for sustainable green transportation. All materials have been verified and are accurate. For that reason, the lesson is recommended for classroom use.

POSITIVES:
-Students connect professional media practices to their own opinions, ideas, questions, and values.
-Students explore different types of media messages and critically think about their influence on consumers.
-This lesson supports collaboration amongst peers.

ADDITIONAL PREREQUISITES:
-This is lesson 4 of 6 in our 3rd-5th grade Green Transportation unit.
-Students should have an understanding of various platforms or settings people might view advertisements.

DIFFERENTIATION:
-Students can use personal devices and work in pairs or small groups to jigsaw the advertisement analysis for each example.
-Teacher can provide an extension activity for advanced students to look for alternative transportation advertisements that highlight sustainable options like public transportation or bikeshare.
-There are differentiated products for culminating projects that are attuned to diverse strengths from students. Students have the option to complete a poster, TikTok, billboard, video ad, or social media post to market their design.

This resource is a video abstract of a research paper created by Research Square on behalf of its authors. It provides a synopsis that's easy to understand, and can be used to introduce the topics it covers to students, researchers, and the general public. The video's transcript is also provided in full, with a portion provided below for preview:

"Mangrove forests are home to many varieties of methanogens, microbes that digest surrounding carbon into methane under low-oxygen conditions. Despite their important role in the global carbon cycle and climate change, the metabolic potentials of two novel methanogens in mangroves remain poorly understood. A new study reports on the ecological importance of Methanofastidiosa (MF) and Methanomassiliicoccales (MMA), two recently discovered groups of methanogens found to dwell naturally in the Mangrove Nature Reserve in Shenzhen, China. Using metagenomics, researchers examined how MF and MMA produce methane. Results showed that the two groups of microbes both use hydrogen to produce methane from compounds found naturally in mangrove sediments, including methylsulfides, methanol, and methylamines. This marks the first time the two groups of methanogens have been studied in the wild and could help scientists understand how these microbes contribute to global methane emissions and a changing climate..."

The rest of the transcript, along with a link to the research itself, is available on the resource itself.

The term "Earth system science" is typically used to describe the science (especially quantitative modeling) of the interactions between the atmosphere, hydrosphere, and cryosphere, and biosphere---the addition of lithosphere to that list provides all of the main generalized components ("spheres") of the Critical Zone.
In this lesson, students will consider basic concepts of system science (studying complex systems), specifically as it can be applied to Critical Zone science. Students will engage in developing a qualitative systems model graphic of the Critical Zone. The knowledge gained here will be applied later in the semester to more in-depth systems thinking of the Critical Zone.

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How are rising sea levels already influencing different regions? This unit offers case study examples for a coastal developing country (Bangladesh), a major coastal urban area (southern California), and an island nation (Maldives). What are the anticipated consequences of additional sea-level rise this century in these different places? This introduction to the module is designed to prompt student consideration of the economic and social impacts of sea-level change. As a class, students conduct a stakeholder analysis for one or more of the case study regions in order to better understand how different segments of a society affect and will be affected by sea-level change.

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Online-adaptable: This exercise could be converted to online whole-class discussions and a breakout group activity. At least the whole-class portion would probably need to be done synchronously.

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This unit is designed to engage students by introducing them to patterns in recent climate and investigating possible reasons for recent changes. Students work in small groups to plot and analyze real-world temperature data covering a decade, and use that information to make predictions about future climatic trends. Whole-class discussions illustrate the differences between short- and long-term trends. Students also analyze graphs of solar irradiance to begin to determine reasons for the observed increase in temperature, setting the stage for Unit 2, which examines the role of the atmosphere in controlling Earth's surface temperature.

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Students will identify how they, as individuals, think about climate science and explore common perceptions and misconceptions that exist about climate science. The activities within this unit incorporate individual reflection by students, small group work, and larger group/class discussions, and endeavor for students to learn how to discern true and untrue statements using logic and fact. Students are presented with various statements about climate science and are tasked with determining whether these statements are factually true and whether they are logically valid. We recognize that students may have limited background factual knowledge in climate science before starting these activities, so some exercises are intended more as a way for students to evaluate how they think about climate science and how to create logically valid scientific statements (i.e., how to think and talk like a scientist). By learning how to identify logically and factually true and untrue statements, students will, by the end of this unit, be able to create and evaluate statements about climate science (even with limited factual knowledge) and critique common misconceptions about climate science.

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In this unit, students explore the role of ocean circulation in climate modification and bioproductivity. The activities require students to interpret the effect of horizontal and vertical seawater movement on heat distribution, carbon dioxide dissolution, and nutrient availability. Students will use their new knowledge to predict how those parameters may change as a result of major shifts in ocean circulation associated with global climate change.

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Unit 1 serves as an introduction to Earth's climate system components. After exploring climate data, students are introduced to the natural processes responsible for global climate and how specific variables are interpreted by scientists.

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How are rising sea levels already influencing the developing nation of Bangladesh, and what are the anticipated consequences of additional sea level rise in the next century? This introduction to the Ice and Sea Level Changes module is designed to prompt student consideration of the economic, social, political, and health impacts of sea level change. They will revisit the impacts of sea level change on society in Unit 5 when they investigate implications for New York City and Southern California.

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Online-ready: This opening class discussion about climate change and societal impacts could be converted to an online discussion format.

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In Unit 2, students apply and evaluate foundational concepts about storm hazards and risk in the context of two cases studies: Superstorm Sandy (2012) and the Storm of the Century (1993). Through different activities and assignments, students develop skills for finding, evaluating, and relating data to case studies and build an understanding of preparedness, response, and resilience. The activities include: an analysis of hazard mitigation plans for their local community, examination of storm-related geophysical processes in the context of societal risks, preparation of a press release for community preparedness, and a peer review and revision opportunity for the press releases. Instructors may also end this unit by having students revise their concept maps from Unit 1, applying lessons learned in Units 1 and 2.

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This unit investigates the role of the atmosphere on incoming solar and outgoing terrestrial radiation and analyzes modern trends in greenhouse gas concentrations. Students first investigate radiation spectra to see how the atmosphere absorbs radiation in different parts of the electromagnetic spectrum. This information is used to develop the idea of greenhouse warming. Students then use the atmospheric CO2 dataset from Mauna Loa to investigate changes in atmospheric CO2 through time, and the drivers behind these changes. Follow-up questions ask students to consider how their own daily activities contribute to atmospheric CO2, and how rising CO2 may trigger potential feedbacks in the Earth system.

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What is the contribution of seawater thermal expansion to recent sea-level rise? In this unit, students create time-series graphs of global averaged sea surface temperature anomaly (SSTA) data spanning 1880 -- 2017 and conduct linear trend analysis to assess SST change during this period. Based on the calculated SST change, students calculate how much sea-level rise occurred during 1993 -- 2015 due to thermal expansion of the oceans. Students compare their thermal expansion calculated sea-level rise results to observed sea-level rise from radar altimetry and assess how much sea-level rise is attributable to thermal expansion.

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Online-ready: The exercise is electronic and could be done individually or in small online groups. Lecture is best done synchronously due to the technical nature. Discussion would be better that way too.

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Students will be provided with seawater pH and carbon dioxide concentration (pCO2) data spanning as far back as 1850. They will describe trends in pH, pCO2 and atmospheric CO2 concentration, outline why these parameters are related, and predict how changes in these parameters will affect marine biology. Each group of students will be given a different set of data from different regions and asked to compare with other groups to determine if seawater pH change is a global or regional phenomena. This unit will provide students with an understanding of the pH buffering system and an opportunity to interpret real climate data.

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How have average global air temperature and sea level changed in the last three decades? Have the changes been consistent? Can future changes in air temperature and sea level be predicted? In this unit, students will become familiar with the concept of a time series by calculating recent air temperature and sea level trends and projecting these measurements for 2100. They will also begin to consider environmental factors in addition to temperature that could influence sea level and the potential implications of sea level changes during the next century.

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Online-adaptable: The lecture and main data analysis exercise can easily be moved online. Student discussions are designed to be intermixed into the flow of the lecture and exercise. Thus moving to online discussions would be might take a bit more planning.

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Students will explore the different aspects of the carbon cycle on Earth. This includes the original source of all the carbon on our planet, the near ubiquity of carbon, the six principle reservoirs of carbon in the Earth system, and the movement (flux) of carbon between reservoirs. Students will approach the chemical history of carbon by personifying the "journey" of specific carbon atoms throughout geologic time.
The unit emphasizes the grand challenges of energy resources and climate change by grounding these issues in a solid understanding of carbon from a systems thinking perspective. The point here is for students to gain a more robust appreciation for the movement of carbon between atmosphere and geosphere, between hydrosphere and biosphere. The unit provides dynamic understanding of how perturbations to one sphere or changes in the amount of carbon in a given reservoir can have implications throughout the Earth system.

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This unit applies a flipped classroom model. Students complete a self-study tutorial prior to attending class. Students are then asked work independently or in pairs to generate a time-aware climate change Web map application using ArcGIS Online. Returning to the theme of cocoa production introduced in Unit 1, students identify climatic conditions conducive for cacao production around the world, especially West Africa where the majority of cacao is grown. Students then use a web application in ArcGIS Online to create a time aware map showing biomes in the KÃppen Climate Classification System and determine how projected climate changes will impact the suitable production regions for cacao in West Africa. Using a jigsaw model, students collect into groups of 4, with a representative from each of the IPCC scenarios, and they compare the the impact of the 4 scenarios in specified cocoa production regions. At the end of the class they will be assigned to one of three regional areas for group work in Units 4-6.

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After an opening discussion of systems thinking and models, student use webDICE , an online Dynamic Integrated Climate Economy model developed by Center for Robust Decision Making on Climate and Energy Policy at the University of Chicago. Students will manipulate input parameters and interpret output in small groups in-class and individually out of class to complete the major mid-module assignment. The goal is to develop their understanding of the sources of uncertainty around future predictions of climate change and its impacts. Students are also introduced to the concept of Social Cost of Carbon (SCC) which is central to subsequent units in this module.

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In this unit, we use energy flows within the climate system to introduce climate feedbacks and system diagrams. The class session uses an interactive lecture approach having students work on multiple tasks throughout the class session. A system diagram highlighting the complexity of climate change mitigation policy is created to highlight the interdisciplinary nature of addressing anthropogenically forced climate change. The climatic effects of volcanic eruptions are highlighted to provide necessary scaffolding for this module's capstone assessment.

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