Exploring Ecosystem Capacity
Created byPhillip Charles Alcock
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Exploring Ecosystem Capacity

Grade 6Science5 days
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Inquiry Framework

Question Framework

Driving Question

The overarching question that guides the entire project.How can we experimentally determine and model the carrying capacity of a specific organism, such as mealworms or yeast, in a controlled environment, considering resource limitations and ethical implications?

Essential Questions

Supporting questions that break down major concepts.
  • How can we determine the carrying capacity of an environment for a specific organism?
  • What are the limiting factors that affect population growth in an ecosystem?
  • How do changes in resource availability impact the growth and survival of organisms?
  • What are the ethical considerations when experimenting with living organisms?
  • How can we use data to model and predict population changes in different environments?

Standards & Learning Goals

Learning Goals

By the end of this project, students will be able to:
  • Students will be able to design and conduct an experiment to determine the carrying capacity of a chosen organism in a controlled environment.
  • Students will be able to collect and analyze data on population growth, resource consumption, and environmental factors.
  • Students will be able to identify limiting factors that influence carrying capacity.
  • Students will be able to model carrying capacity and predict population changes based on resource availability.
  • Students will be able to discuss the ethical considerations related to experimenting with living organisms and propose solutions for responsible research practices.

NGSS

MS-LS2-1
Primary
MS-LS2-1. Analyze and interpret data to provide evidence for the effects of resource availability on organisms and populations of organisms in an ecosystem.Reason: This standard directly aligns with the project's focus on analyzing data from the carrying capacity experiment to understand the impact of resource availability on the chosen organism.
LS2.A
Supporting
LS2.A: Interdependent Relationships in EcosystemsReason: This standard supports the project by providing a foundational understanding of how organisms interact with their environment and how resource availability influences these relationships.

Entry Events

Events that will be used to introduce the project to students

Invasive Species News Report

Students encounter a news report about an invasive species devastating a local ecosystem. They discuss the factors contributing to the uncontrolled growth and the potential consequences.
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Portfolio Activities

Portfolio Activities

These activities progressively build towards your learning goals, with each submission contributing to the student's final portfolio.
Activity 1

Natural Habitat Observation Setup

Students will create a natural outdoor habitat, such as a marked-off area in a field, a section of a school garden, or an area near a tree, to observe a chosen organism and its interactions with the environment. They will select easily observable organisms like ants, pill bugs, or dandelions. They will also establish a system for monitoring and recording environmental factors like temperature, sunlight, and available space using readily available materials like sticks, rocks, and string.

Steps

Here is some basic scaffolding to help students complete the activity.
1. Select a natural outdoor area suitable for observation and that contains an easily observable organism, such as ants, pill bugs, or dandelions.
2. Mark the boundaries of your observation area using natural materials like sticks, rocks, or string.
3. Develop tools for monitoring temperature (e.g., shady vs. sunny spot comparisons), sunlight exposure (e.g., tracking sun movement), and other relevant environmental factors using readily available natural materials.

Final Product

What students will submit as the final product of the activityA designated natural outdoor habitat with a chosen organism and tools for monitoring environmental factors using natural materials.

Alignment

How this activity aligns with the learning objectives & standardsMS-LS2-1 (Analyzing and interpreting data related to resource availability and organism growth), LS2.A (Understanding interdependent relationships in ecosystems)
Activity 2

Population Dynamics Journal

Students will regularly observe and document the growth of their organism population. They will also track resource consumption, such as food availability for mealworms or sugar for yeast.

Steps

Here is some basic scaffolding to help students complete the activity.
1. Observe and count the population of your organism regularly (e.g., daily or every other day).
2. Measure and record the resources available to your organism.
3. Document any changes in the environment or the organisms' behavior.

Final Product

What students will submit as the final product of the activityA detailed logbook with observations and data on population size, resource consumption, and environmental conditions over time.

Alignment

How this activity aligns with the learning objectives & standardsMS-LS2-1 (Collecting data on population growth and resource consumption), LS2.A (Observing the dependence of organisms on resources)
Activity 3

Data Detectives

Students will analyze the collected data to identify trends in population growth and resource consumption. They'll look for potential limiting factors affecting the carrying capacity, such as food availability, space, or waste accumulation.

Steps

Here is some basic scaffolding to help students complete the activity.
1. Plot the population size over time on a graph.
2. Graph the available resources over time.
3. Analyze the graphs to determine trends and correlations between population growth and resource availability.

Final Product

What students will submit as the final product of the activityGraphs and charts illustrating population growth over time, resource depletion, and the relationship between these factors.

Alignment

How this activity aligns with the learning objectives & standardsMS-LS2-1 (Analyzing data to understand resource impact), LS2.A (Understanding limiting factors affecting population growth)
Activity 4

Carrying Capacity Report

Based on their data analysis, students will formulate a conclusion about the carrying capacity of their chosen environment for the organism. They will explain how their findings relate to the concept of carrying capacity and the factors that limit population growth.

Steps

Here is some basic scaffolding to help students complete the activity.
1. Summarize your findings and conclusions about the carrying capacity of your environment.
2. Explain how your data supports your conclusion.
3. Describe any challenges encountered during the experiment and how they were addressed.

Final Product

What students will submit as the final product of the activityA written report summarizing the experiment, including data analysis, identification of limiting factors, and conclusions about carrying capacity.

Alignment

How this activity aligns with the learning objectives & standardsMS-LS2-1 (Interpreting data to provide evidence), LS2.A (Connecting resource availability to organism growth)
Activity 5

Ethics Investigators

Students will consider the ethical implications of conducting experiments with living organisms. They will research and present responsible research practices and discuss alternatives to using living organisms for studying population dynamics.

Steps

Here is some basic scaffolding to help students complete the activity.
1. Research ethical considerations related to experimenting with living organisms.
2. Discuss the importance of responsible research practices.
3. Explore alternative methods for studying population dynamics, such as simulations or modeling.

Final Product

What students will submit as the final product of the activityA presentation or discussion outlining the ethical considerations, responsible research practices, and alternative methods for studying population dynamics.

Alignment

How this activity aligns with the learning objectives & standardsMS-LS2-1 (Applying understanding of resource impact), LS2.A (Considering ethical implications of scientific research)
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Rubric & Reflection

Portfolio Rubric

Grading criteria for assessing the overall project portfolio

Carrying Capacity Experiment Rubric

Category 1

Scientific Inquiry and Experimentation

Assessment of the student's ability to design, conduct, and refine scientific experiments related to determining carrying capacity.
Criterion 1

Experiment Design

Evaluates the creativity and effectiveness in designing experiments to determine carrying capacity.

Exemplary
4 Points

Designs an innovative and effective experiment with detailed planning and consideration of all variables impacting the carrying capacity.

Proficient
3 Points

Designs a thorough experiment with clear methodologies and consideration of most variables.

Developing
2 Points

Designs a basic experiment with partial consideration of variables impacting carrying capacity.

Beginning
1 Points

Struggles with designing an effective experiment, with minimal understanding of variables.

Criterion 2

Data Collection and Documentation

Assesses the consistency and accuracy of data gathering and the quality of documentation in the experiment.

Exemplary
4 Points

Collects and documents data meticulously, providing comprehensive evidence with accurate records.

Proficient
3 Points

Collects and documents data accurately and consistently with minor inaccuracies.

Developing
2 Points

Inconsistently collects and documents data with noticeable errors or missing information.

Beginning
1 Points

Struggles with data collection and documentation, resulting in incomplete records.

Category 2

Data Analysis and Interpretation

Evaluates the student's ability to analyze data, identify trends, and draw valid conclusions regarding carrying capacity.
Criterion 1

Data Analysis

Assessment of ability to effectively analyze data related to population dynamics and resource availability.

Exemplary
4 Points

Advanced analysis of data, identifying complex trends and correlations with insightful interpretation.

Proficient
3 Points

Effective data analysis identifying clear trends and correlations with accurate interpretation.

Developing
2 Points

Basic analysis of data with limited identification of trends and substantial interpretation inaccuracies.

Beginning
1 Points

Struggles with data analysis, displaying minimal identification of trends or correlations.

Criterion 2

Conclusion and Insights

Evaluates the quality of conclusions drawn from data analysis and their alignment with scientific principles.

Exemplary
4 Points

Draws insightful, evidence-based conclusions thoroughly aligned with scientific findings and principles.

Proficient
3 Points

Draws clear, evidence-based conclusions that align with scientific findings.

Developing
2 Points

Develops basic conclusions with partial support from evidence and scientific principles.

Beginning
1 Points

Struggles to develop clear conclusions or aligns poorly with evidence.

Category 3

Ethical Considerations and Responsible Practices

Evaluation of understanding and application of ethical considerations in scientific experiments.
Criterion 1

Ethical Understanding

Measures comprehension of ethical considerations and implications in scientific procedures using living organisms.

Exemplary
4 Points

Exhibits comprehensive understanding of ethical considerations with innovative solutions for responsible practice.

Proficient
3 Points

Demonstrates solid understanding of ethical considerations, proposing reasonable solutions.

Developing
2 Points

Shows emerging comprehension of ethical considerations with limited solution proposals.

Beginning
1 Points

Exhibits minimal understanding of ethical considerations in scientific practices.

Category 4

Communication of Findings

Assesses ability to effectively communicate experimental findings through oral, written, or visual formats.
Criterion 1

Clarity and Organization

Evaluates how clearly and logically findings are communicated.

Exemplary
4 Points

Communicates findings with exceptional clarity and organization, providing a compelling narrative.

Proficient
3 Points

Communicates findings clearly with good organization, offering a complete narrative.

Developing
2 Points

Presents findings with emerging clarity but lacks consistent organization.

Beginning
1 Points

Struggles to communicate findings understandably, lacking organization.

Reflection Prompts

End-of-project reflection questions to get students to think about their learning
Question 1

Reflect on the entire Carrying Capacity Experiment project. What were your key takeaways regarding carrying capacity and its influencing factors?

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Question 2

On a scale of 1 to 5, how confident are you in your ability to design and conduct an experiment to determine carrying capacity?

Scale
Required
Question 3

What were the most significant challenges you encountered during the project, and how did you overcome them?

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Required
Question 4

How did the "Invasive Species News Report" entry event influence your understanding of the importance of carrying capacity in real-world ecosystems?

Text
Optional
Question 5

Which portfolio activity did you find most valuable in learning about carrying capacity, and why?

Multiple choice
Required
Options
Natural Habitat Observation Setup
Population Dynamics Journal
Data Detectives
Carrying Capacity Report
Ethics Investigators
Question 6

How might you apply your understanding of carrying capacity to address real-world environmental issues?

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Optional