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Ecosystem Components Interactive Explorer

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About This MicroSim

This interactive sorting activity challenges students to classify 16 ecosystem components into two fundamental categories: biotic factors (living or once-living) and abiotic factors (nonliving). Components include familiar items like Oak Tree, Sunlight, Mushroom, Soil Minerals, Earthworm, Wind, Bacteria, Water, Deer, Temperature, Algae, Rocks, Frog, Rainfall, Moss, and Salinity -- each represented with an icon and label on a draggable card.

Students drag each card into the correct drop zone: the green Biotic Factors zone on the left or the blue Abiotic Factors zone on the right. A score counter tracks correct placements, and a Check Answers button validates all selections with immediate feedback. This active categorization approach builds stronger mental models than passive reading because students must make decisions and receive corrective feedback.

After successfully sorting all components, a Show Interactions button reveals connections between biotic and abiotic factors, reinforcing the key ecological insight that these categories are not independent -- organisms constantly interact with and depend on their nonliving environment.

How to Use

  1. Examine the ecosystem component cards displayed in the central area.
  2. Drag each card to either the green "Biotic Factors" zone (left) or the blue "Abiotic Factors" zone (right).
  3. Click "Check Answers" to see which placements are correct and which need revision.
  4. Correct any misplacements and check again until all 16 components are correctly sorted.
  5. Track your score showing correct placements out of the total.
  6. After correct sorting, click "Show Interactions" to see how biotic and abiotic factors connect.
  7. Click "Reset" to start over and try again for a perfect score.

Iframe Embed Code

You can add this MicroSim to any web page by adding this to your HTML:

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<iframe src="https://dmccreary.github.io/ecology/sims/ecosystem-components-explorer/main.html"
        height="547px"
        width="100%"
        scrolling="no"></iframe>

Lesson Plan

Grade Level

9-12 (High School Environmental Science)

Duration

35 minutes

Learning Objectives

  • Classify ecosystem components as biotic or abiotic factors
  • Explain the difference between biotic and abiotic factors with specific examples
  • Describe how biotic and abiotic factors interact within an ecosystem
  • Identify components that may be challenging to classify and explain why

Prerequisites

  • Basic understanding of living vs. nonliving things
  • Introduction to the concept of an ecosystem
  • Familiarity with common organisms and environmental factors

Standards Alignment

  • NGSS HS-LS2-2: Use mathematical representations to support and revise explanations based on evidence about factors affecting biodiversity
  • AP Environmental Science: Topic 1.1 -- Introduction to Ecosystems
  • NGSS HS-LS2-6: Evaluate claims, evidence, and reasoning that the complex interactions in ecosystems maintain relatively consistent numbers and types of organisms

Activities

  1. Warm-Up (5 min): Take students outside (or show a photo of the schoolyard). Ask them to list 10 things they can observe. Back inside, ask: "How could we sort these into two groups?" Guide toward biotic vs. abiotic.

  2. Interactive Sorting (10 min): Students work through the MicroSim individually, sorting all 16 components. They should attempt the full sort before checking answers, then record which items they found most difficult to classify and why.

  3. Discussion and Clarification (10 min): Class discussion of commonly confused items. Is soil biotic or abiotic? (It contains both.) Are dead leaves biotic or abiotic? (Biotic -- they were once living.) Is bacteria always visible? These edge cases deepen understanding of the classification system.

  4. Interaction Mapping (10 min): After viewing the interaction reveals in the MicroSim, students choose three biotic-abiotic pairs and write a sentence explaining each interaction. For example: "Water (abiotic) is absorbed by the Oak Tree (biotic) through its roots and used in photosynthesis." Students share their best interaction with the class.

Assessment Questions

  1. Define biotic and abiotic factors and give three examples of each that are not in the simulation.
  2. Explain why bacteria might be surprising as a biotic factor to some students. What makes it biotic?
  3. Choose one biotic factor and one abiotic factor from the simulation and describe two ways they interact.
  4. Why is it important for ecologists to study both biotic and abiotic factors when analyzing an ecosystem?

References

  1. Smith, T.M. & Smith, R.L. (2015). Elements of Ecology. 9th ed. Pearson.
  2. Molles, M.C. (2016). Ecology: Concepts and Applications. 8th ed. McGraw-Hill.
  3. National Geographic Society. "Ecosystem." https://education.nationalgeographic.org/resource/ecosystem