What Goes Around Comes Around

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In this simulation activity, learners act as parts of the circulatory system and discover how it serves as a transport system for food/nutrients, oxygen, carbon dioxide and waste. Learners act as cells, the heart, lungs, small intestine, and kidneys. They trade labeled poker chips to represent the exchange of carbon dioxide and waste for oxygen and nutrients. [Activity is publicly available through a web crawler capture on Archive.org.]

Quick Guide

Preparation Time:
10 to 30 minutes

Learning Time:
10 to 30 minutes

Estimated Materials Cost:
$1 - $5 per group of students

Age Range:
Ages 11 - 14

Resource Types:
Activity, Simulation


Materials List (per group of students)

  • 48 poker chips (12 blue, 12 red, 12 green, 12 yellow)
  • Black permanent marker
  • 10 5"x8" index cards
  • Hole punch
  • String


  • Life Sciences
    • Human Body
      • Circulation
      • Digestion
      • Respiration

Informal Categories

  • Physical Activity


To use this activity, learners need to:

  • see
  • see color
  • read
  • be mobile
  • touch

Learning styles supported:

  • Involves hands-on or lab activities


This resource is part of:

Access Rights:

  • Free access