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Blood Circulation and the Heart Simulation

Science · Blood Circulation · Grades 4–5, Middle School, and High School

About this simulation

Blood follows two connected loops: pulmonary circulation between the heart and lungs, and systemic circulation between the heart and the rest of the body. Heart rate and stroke volume together determine cardiac output. Students can change heart rate and activity level and compare what happens. Use it for biology inquiry with Grades 4–5, Middle School, and High School on a projector or student device.

Standards: NGSS MS-LS1-3

What students can explore

  • Follow oxygen-rich and oxygen-poor blood round the loop from the heart to the lungs and body
  • Change heart rate and stroke volume and watch cardiac output respond
  • Compare a resting heart with one working flat out

Learning objectives

  1. 1Predict how changing heart rate will affect the cardiac output, then test the prediction.
  2. 2Use evidence from the interactive visual to explain the result.

Questions teachers ask

Is the Blood Circulation and the Heart simulation free?

Yes. Open the Blood Circulation and the Heart simulation in a modern browser with no download or sign-up required.

Is it suitable for Grades 4–5, Middle School, and High School?

The simulation includes learning-level presets spanning Grades 4–5, Middle School, and High School. Choose the level that matches your class, then use it on a projector or student devices.

Embed this simulation

Drop it into your LMS, blog, or class site — free.

<iframe src="https://kiwibee.io/en/simulations/blood-circulation-simulation/embed" title="Blood Circulation and the Heart Simulation | KiwiBee" loading="lazy" allowfullscreen style="width:100%;height:min(70vh,620px);min-height:420px;border:0;border-radius:16px"></iframe>

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