Mississippi Science L.6.1.6
The Standard
- L.6.1
- Students will demonstrate an understanding that living things range from simple to complex organisms, are organized hierarchically, and function as whole living systems.
Develop and use models to show relationships among the increasing complexity of multicellular organisms (cells, tissues, organs, organ systems, organisms) and how they serve the needs of the organism.
2026 Mississippi College- and Career-Readiness Standards for Science · Hierarchical Organization
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students build a model showing how small living parts join to form larger working parts of a body. They use it to explain how those parts help keep a person alive.
What Mastery Looks Like
- A student places a heart muscle cell, heart muscle tissue, the heart, the circulatory system, and a person in order. They explain how contracting cells help the heart pump blood through the body.
Common Misconceptions
- Students may call a single cell an organ or think the heart is made only of muscle tissue. Some can put the parts in order but cannot explain what each part does.
How to Assess It
- Give students five cards labeled heart muscle cell, heart muscle tissue, heart, circulatory system, and person. Ask them to arrange the cards and write one sentence explaining how the smallest part helps the person.
Lesson moves
Ways to Teach It
Give pairs picture cards of the five body levels; have them stack the cards from smallest to largest and draw arrows showing what joins together.
Ask students to write: Why can't one heart muscle cell pump blood to your toes? Use two parts of your model in your answer.
Play a card-match round: students match a body part card to its level, then say what that part helps the body do.
After 20 jumping jacks, have students count their pulse and trace how heart muscle cells help move blood to their working legs.
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Printable L.6.1.6 Worksheet

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Related Standards
- L.6.3.2
Develop and use models to describe the levels of organization within ecosystems (species, populations, communities, ecosystems, and biomes).
- BIO.1E.1
Construct models to explain how the processes of cell division and cell differentiation produce and maintain complex multicellular organisms.
- BIO.1C.1
Develop and use models to explore how specialized structures within cells (e.g., nucleus, cytoskeleton, endoplasmic reticulum, ribosomes, Golgi apparatus, lysos...
- BIO.1A.3
Using specific examples, explain how cells can be organized into complex tissues, organs, and organ systems in multicellular organisms.
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