Matter Cycling and Energy Flow in Ecosystems Unit Bundle NGSS MS-LS 2-3

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Enhance your ecology curriculum with this comprehensive mini-bundle of resources! Designed to engage and educate students about the intricate workings of ecosystems, this bundle covers essential topics such as matter cycling, energy flow, food webs, and biotic and abiotic factors. Whether you’re teaching in-person, remotely, or in a hybrid model, these resources offer versatility and adaptability to meet your classroom needs. From hands-on activity labs and interactive stations to engaging card sorts and informative reading passages, this bundle provides a well-rounded learning experience. With assessment opportunities and independent work packets included, you can easily monitor your students’ progress and reinforce the important concepts of LS2.B: Cycles of Matter and Energy Transfer in Ecosystems. Ignite your students’ curiosity and deepen their understanding of the interconnectedness of living organisms within ecosystems.

You get the following resources:

1. Engaging Intro to Ecology Activity Lab – LS2.B Assessment Included!

2. Explore Matter Cycling and Energy in Ecosystems with Versatile Stations!

3. Fun and Collaborative Food Web Food Chain Card Sort – NGSS Lesson

4. Comprehensive PowerPoint and Guided Notes on Matter Cycling and Energy Flow in Ecosystems

5. Independent Worksheet Packet for Matter Cycling and Energy Flow in Ecosystems – LS2.B

6. Assess Your Students’ Understanding with Matter Cycling and Energy Flow Packet

7. Food Web Color By Numbers is so fun!

8. Informative Reading Passages – Perfect for Independent Work and Review – LS2.B

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Concepts Included:

Cycling of Matter and Energy in Ecosystems

Interactions in Ecosystems

Cycling & Flow of Energy


Biotic and Abiotic Factors

Trophic Pyramid

Food Web

Food Chains




Primary Producer

Primary Consumer

Secondary Consumer

Tertiary Consumers


Patterns in Predator Prey Relationships

Competition in Ecosystems






Direct and Indirect Effect





LS2.B:  Cycles of Matter and Energy Transfer in Ecosystems

• Food webs are models that demonstrate how matter and energy is transferred between producers, consumers, and decomposers as the three groups interact within an ecosystem. Transfers of matter into and out of the physical environment occur at every level. Decomposers recycle nutrients from dead plant or animal matter back to the soil in terrestrial environments or to the water in aquatic environments. The atoms that make up the organisms in an ecosystem are cycled repeatedly between the living and nonliving parts of the ecosystem. (MS-LS2-3)

LS2.C:  Ecosystem Dynamics, Functioning, and Resilience

• Ecosystems are dynamic in nature; their characteristics can vary over time. Disruptions to any physical or biological component of an ecosystem can lead to shifts in all its populations. (MS-LS2-4)

PS3.D:  Energy in Chemical Processes and Everyday Life

• The chemical reaction by which plants produce complex food molecules (sugars) requires an energy input (i.e., from sunlight) to occur. In this reaction, carbon dioxide and water combine to form carbon-based organic molecules and release oxygen. (secondary to MS-LS1-6)

• Cellular respiration in plants and animals involve chemical reactions with oxygen that release stored energy. In these processes, complex molecules containing carbon react with oxygen to produce carbon dioxide and other materials. (secondary to MS-LS1-7)

LS1.C:  Organization for Matter and Energy Flow in Organisms

• Plants, algae (including phytoplankton), and many microorganisms use the energy from light to make sugars (food) from carbon dioxide from the atmosphere and water through the process of photosynthesis, which also releases oxygen. These sugars can be used immediately or stored for growth or later use. (MS-LS1-6)

• Within individual organisms, food moves through a series of chemical reactions in which it is broken down and rearranged to form new molecules, to support growth, or to release energy. (MS-LS1-7)

LS2.A:  Interdependent Relationships in Ecosystems

• Organisms, and populations of organisms, are dependent on their environmental interactions both with other living things and with nonliving factors. (MS-LS2-1)

• In any ecosystem, organisms and populations with similar requirements for food, water, oxygen, or other resources may compete with each other for limited resources, access to which consequently constrains their growth and reproduction. (MS-LS2-1)

Cause and Effect

Cause and effect relationships may be used to predict phenomena in natural or designed systems.

Systems and System Models

Models can be used to represent systems and their interactions—such as inputs, processes and outputs—and energy, and matter flows within systems.

Patterns Observed patterns in nature guide organization and classification and prompt questions about relationships and causes underlying them.

Energy and Matter: Tracking energy and matter flows, into, out of, and within systems helps one understand their system’s behavior.

Stability and Change:

For both designed and natural systems, conditions that affect stability and factors that control rates of change are critical elements to consider and understand.


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