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The Human Body: The Teams That Keep You Alive

Students explore the major body systems — from the food-processing digestive system to the message-sending nervous system — and see how they work together every second.

Grades 3–5Upper Elementary50 minutes1 class period5E ModelInquiry-based4 StandardsNGSS + CCSS
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Lesson at a Glance

Everything you need before the bell rings

Learning Objectives

Students will be able to…

  • ✓Identify the major body systems and their main organs.
  • ✓Describe the job of each system.
  • ✓Trace how the digestive system turns food into energy.
  • ✓Explain how body systems work together.
Essential Question

Right now, without you thinking about it, your body is digesting, pumping, breathing, and sending messages. Who’s in charge of all that?

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5E Phases
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Vocabulary Terms
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Standards Aligned
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Interactive Task
Explore · Interactive Model

Body Systems Explorer

Project this and tap through each system. Have students record each system’s main job and one organ that belongs to it.

🫀 Explore the body’s systems — tap each oneTry it

The Lesson · 5E Model

50 minutes, five moves

Tap any phase to open the teacher moves and student actions.

1

Engage — Follow the Apple

5 min

You take a bite of an apple. Where does it go?

👩‍🏫 Teacher Moves

  • Ask students to trace a bite of food through the body.
  • Chart their ideas about what happens to it.
  • Reveal that many systems will be involved.

🎒 Student Actions

  • Predict the journey of a bite of food.
  • Name any body parts they think are involved.
  • Record a first idea in their notebook.
2

Explore — Body Systems Explorer

12 min

Students tour six systems and their jobs.

👩‍🏫 Teacher Moves

  • Send groups to the Body Systems Explorer above.
  • Ask them to record each system’s job + an organ.
  • Prompt: “Which system did the apple use?”

🎒 Student Actions

  • Tap through all six systems.
  • Log each system’s job and a main organ.
  • Find the system that handles food.
3

Explain — Systems & Digestion

13 min

Zoom in on how food becomes energy.

👩‍🏫 Teacher Moves

  • Define system, organ, cell.
  • Trace digestion: mouth → stomach → intestines.
  • Connect nutrients to energy for the whole body.

🎒 Student Actions

  • Order the digestive path.
  • Explain what the stomach and intestines do.
  • Label organs on a body outline.
4

Elaborate — Teamwork

15 min

Run in place — which systems just kicked in?

👩‍🏫 Teacher Moves

  • Have students jog in place for 30 seconds.
  • Ask which systems responded (heart, lungs, muscles).
  • Show how systems depend on each other.

🎒 Student Actions

  • Notice their heartbeat and breathing speed up.
  • List the systems working during exercise.
  • Explain how two systems help each other.
5

Evaluate — Exit Ticket

5 min

Three quick checks on systems and digestion.

👩‍🏫 Teacher Moves

  • Hand out the exit ticket below.
  • Look for correct jobs + the digestion path.
  • Collect as formative data.

🎒 Student Actions

  • Name a system and its job.
  • Order the digestive path.
  • Explain how two systems work together.
Standards Alignment

Built to the standards you report on

Aligned to Next Generation Science Standards and Common Core literacy. State-standard crosswalks available on request.

NGSS
4-LS1-1

Construct an argument that plants and animals have internal and external structures that support survival, growth, behavior, and reproduction.

NGSS
4-LS1-2

Use a model to describe that animals receive information through their senses, process it, and respond in different ways.

CCSS
RI.4.7

Interpret information presented visually, orally, or quantitatively and explain how it contributes to understanding.

CCSS
W.4.2

Write informative/explanatory texts to examine a topic and convey ideas clearly.

Differentiation

One lesson, every learner

Multilingual Learners

ELL / EMERGING READERS
  • Life-size body outline to label with pictures.
  • Sentence frame: “The ___ system helps me ___.”
  • Gesture each system (breathe, pump, move).

Support & Access

IEP / 504
  • Focus on three systems first (digestive, respiratory, skeletal).
  • Provide a pre-labeled diagram to match.
  • Allow ordering digestion picture cards.

Stretch & Extend

GIFTED / EARLY FINISHERS
  • Research what makes a healthy heart or lungs.
  • Model the digestive system with a bag and tube.
  • Investigate how the brain controls a reflex.
Materials

What to gather

  • 📽️Projector / board
  • 📓Science notebooks
  • 💻The Body Systems Explorer
  • 🗺️Body-outline handout
  • ✏️Colored pencils
  • 🎫Exit-ticket slips
Vocabulary

Key terms — hover for a quick definition

systemorgans working together for a joborgana body part with a special jobcellthe smallest unit of lifedigestionbreaking food into nutrientsnutrientsmaterials from food the body usescirculatorythe heart-and-blood systemrespiratorythe breathing systemnervousthe brain-and-nerves system
Evaluate

Exit Ticket

Preview the three formative checks. Tap “Sample answer” to see what mastery looks like — hide them before you print for students.

QUESTION 1
Name one body system and describe its job.
Sample: The respiratory system brings oxygen into the body and removes carbon dioxide using the lungs.
QUESTION 2
Put the digestive path in order: stomach, mouth, large intestine, small intestine.
Mouth → stomach → small intestine → large intestine.
QUESTION 3
When you run, your heart beats faster and you breathe harder. Which two systems are working together, and why?
The circulatory and respiratory systems — the lungs take in more oxygen and the heart pumps blood faster to carry that oxygen to the working muscles.

Going deeper? Build a working “lung.”

Use a plastic bottle, straws, and balloons to model how the lungs and diaphragm move air in and out. A printable build guide is in the Science library.

Study · Flashcards

Study the key terms

Tap a card to flip it, then rate whether you knew it. Built from this lesson’s vocabulary.

🃏 The Human Body: Body SystemsFlip
Card 1
Term
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Meaning
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Practice · Quiz

Check your understanding

A quick self-check with instant feedback, drawn from this lesson’s key terms.

📝 The Human Body: Body SystemsQuiz
Score: 0
1 / 6
Question 1
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Practice · Worksheet

Printable worksheet

A print-and-go review sheet with a built-in answer key. Tap “Show answer key” to reveal answers, or print the clean version for students.

🖨️ The Human Body: Body SystemsPrint
Name: ________________________
Date: ____________

Part A · Write the word that matches each meaning

Word bank: cell, circulatory, digestion, nervous, nutrients, organ, respiratory, system
  1. organs working together for a job
  2. the heart-and-blood system
  3. the breathing system
  4. the brain-and-nerves system
  5. the smallest unit of life
  6. breaking food into nutrients
  7. materials from food the body uses
  8. a body part with a special job

Part B · Show what you learned

  1. Name one body system and describe its job.
  2. Put the digestive path in order: stomach, mouth, large intestine, small intestine.
  3. When you run, your heart beats faster and you breathe harder. Which two systems are working together, and why?
Answer key — Part A: 1) system · 2) circulatory · 3) respiratory · 4) nervous · 5) cell · 6) digestion · 7) nutrients · 8) organ
Part B: 1) Sample: The respiratory system brings oxygen into the body and removes carbon dioxide using the lungs. 2) Mouth → stomach → small intestine → large intestine. 3) The circulatory and respiratory systems — the lungs take in more oxygen and the heart pumps blood faster to carry that oxygen to the working muscles.