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Education Concept Tracker

A prerequisite knowledge graph of 1590 learning concepts across 8subjects. Track what you've mastered and see exactly what you're ready to learn next — the topics whose prerequisites you've already met. Built on the Marble Open Skill Taxonomy.

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The Circulatory System

Science · Organisms & Life Processes · conceptual

Identify and name the main parts of the human circulatory system and describe the functions of the heart, blood vessels, and blood

What mastery looks like

  • Name the main components: heart, arteries, veins, capillaries, blood
  • Describe the heart as a pump that pushes blood around the body in a continuous loop
  • Explain that blood carries oxygen and nutrients to cells and removes waste products like carbon dioxide

Check your understanding

Can The Circulatory System explain what the heart does, why we have blood vessels throughout the body, and what blood actually carries?