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Exercise & Your Heart: The Muscle That Gets Stronger

Students discover that the heart is a muscle — and that when they move and play, it beats faster and grows stronger, just like any muscle that gets exercise.

Grades 3–5Fitness45 minutes1 class periodPE / HealthExplicit teaching4 StandardsSHAPE
Start the Lesson
Lesson at a Glance

Everything you need before the bell rings

Learning Objectives

Students will be able to…

  • ✓Explain that the heart is a muscle.
  • ✓Describe how exercise raises heart rate.
  • ✓Explain why the heart beats faster during activity.
  • ✓Name activities that are good for the heart.
Essential Question

When you run around, your heart pounds. Why does that happen — and how does moving your body actually make your heart stronger?

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Lesson Phases
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Vocabulary Terms
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Standards Aligned
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Interactive Task
Heart-Rate Meter · Interactive

The Heart-Rate Meter

Project this and move the activity slider from resting to running. Have students watch the heart beat faster and connect activity to heart rate.

❤️ Move the slider — watch your heart rateTry it
❤️
70 bpm
Activity: Resting

The Lesson · Move · Learn · Practice · Play

45 minutes, five moves

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

1

Warm-Up — Feel Your Heartbeat

5 min

Sit still, then do 10 jumping jacks — what changes?

👩‍🏫 Teacher Moves

  • Have students feel their pulse at rest.
  • Do 10 jumping jacks; feel it again.
  • Set the goal: exercise and the heart.

🎒 Student Actions

  • Feel the resting pulse.
  • Do the jumping jacks.
  • Notice the faster beat.
2

Learn — The Heart Is a Muscle

10 min

Teacher teaches the heart.

👩‍🏫 Teacher Moves

  • Explain the heart is a muscle that pumps blood.
  • Use the Heart-Rate Meter to show activity levels.
  • Explain faster beats deliver more oxygen.

🎒 Student Actions

  • Learn the heart is a muscle.
  • Watch heart rate rise.
  • Explain why it speeds up.
3

Practice — Get Moving

12 min

Students practice.

👩‍🏫 Teacher Moves

  • Lead activities that raise heart rate.
  • Have students notice their breathing/pulse.
  • Compare resting vs. active.

🎒 Student Actions

  • Do heart-pumping movement.
  • Notice pulse and breathing.
  • Compare rest vs. active.
4

Play — Heart-Healthy Games

13 min

Students play.

👩‍🏫 Teacher Moves

  • Play a movement game (tag, relays).
  • Point out it strengthens the heart.
  • Keep everyone active and included.

🎒 Student Actions

  • Play and stay active.
  • Feel the heart working.
  • Include everyone.
5

Cool-Down — Cool-Down

5 min

Students reflect.

👩‍🏫 Teacher Moves

  • Cool down; feel heart rate slow.
  • Ask why exercise is good for the heart.
  • Hand out the exit ticket.

🎒 Student Actions

  • Cool down and rest.
  • Explain the benefit.
  • Complete the exit ticket.
Standards Alignment

Built to the standards you report on

Aligned to the SHAPE America National Standards for Physical Education and Health.

SHAPE
S3

Achieves and maintains a health-enhancing level of physical activity and fitness.

SHAPE
S4

Exhibits responsible personal and social behavior in physical activity.

SHAPE
NHES.1

Comprehend concepts related to physical activity and the body.

SHAPE
NHES.7

Demonstrate behaviors to maintain or improve personal fitness.

Differentiation

One lesson, every learner

Multilingual Learners

ELL / EMERGING READERS
  • Feel the pulse together and count.
  • Sentence frame: “When I run, my heart beats ___.”
  • Use the heart-rate visual.

Support & Access

IEP / 504
  • Use gentle movement to raise heart rate.
  • Feel the pulse with help.
  • Focus on “heart is a muscle” as the key idea.

Stretch & Extend

GIFTED / EARLY FINISHERS
  • Estimate heart-rate zones.
  • Track pulse before/after exercise.
  • Explain how lungs and heart work together.
Materials

What to gather

  • 📽️Projector / board
  • 📓Health notebooks
  • 💻The Heart-Rate Meter
  • 👟Open space to move
  • ⏱️A timer
  • 🎫Exit-ticket slips
Vocabulary

Key terms — hover for a quick definition

heartthe muscle that pumps bloodmusclebody part that moves and gets strongerheart ratehow many times the heart beats per minutepulsethe beat you feel in your wrist or neckexercisemoving your body to stay healthyoxygenthe gas your muscles needcardioactivity that raises your heart rateendurancebeing able to keep moving longer
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
What kind of body part is the heart?
A muscle — it pumps blood, and like any muscle it gets stronger with exercise.
QUESTION 2
Why does your heart beat faster when you run?
Your muscles need more oxygen when you move, so your heart pumps faster to deliver it.
QUESTION 3
Name one activity that is good for your heart.
Sample: running, jumping rope, swimming, biking, dancing, or playing tag.

Going deeper? Chart your pulse.

Have students count their pulse at rest, after walking, and after running, then chart how activity changes heart rate. A printable pulse-tracking sheet is in the PE & Health 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.

🃏 Exercise & Your HeartFlip
Card 1
Term
Tap to flip →
Meaning
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Practice · Quiz

Check your understanding

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

📝 Exercise & Your HeartQuiz
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.

🖨️ Exercise & Your HeartPrint
Name: ________________________
Date: ____________

Part A · Write the word that matches each meaning

Word bank: cardio, endurance, exercise, heart, heart rate, muscle, oxygen, pulse
  1. the gas your muscles need
  2. being able to keep moving longer
  3. how many times the heart beats per minute
  4. moving your body to stay healthy
  5. the beat you feel in your wrist or neck
  6. the muscle that pumps blood
  7. activity that raises your heart rate
  8. body part that moves and gets stronger

Part B · Show what you learned

  1. What kind of body part is the heart?
  2. Why does your heart beat faster when you run?
  3. Name one activity that is good for your heart.
Answer key — Part A: 1) oxygen · 2) endurance · 3) heart rate · 4) exercise · 5) pulse · 6) heart · 7) cardio · 8) muscle
Part B: 1) A muscle — it pumps blood, and like any muscle it gets stronger with exercise. 2) Your muscles need more oxygen when you move, so your heart pumps faster to deliver it. 3) Sample: running, jumping rope, swimming, biking, dancing, or playing tag.