Germ Tag

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In this version of tag, a large group of learners model how the body fights infection. Learners act as germs, as lymphocytes, and as the body's cells threatened by germs. After playing one round, subsequent rounds can use different numbers of germs and/or lymphocytes to see how the infection rate is changed. When learners set up a free account at Kinetic City, they can answer bonus questions at the end of the activity as a quick assessment. They can also keep track of their progress in all of the Kinetic City activities, and compare their progress to other participants worldwide.

Quick Guide

Preparation Time:
5 to 10 minutes

Learning Time:
30 to 45 minutes

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

Age Range:
Ages 8 - 11

Resource Types:
Activity, Game, Model


Materials List (per group of students)

  • a group of up to 36 learners
  • green flag belts (for learners acting as body cells)
  • red flag belts (for learners acting as germs)
  • white wrist bands (for learners acting as lymphocytes)


  • Life Sciences
    • Human Body
      • Health and Nutrition
      • Medicine
      • Immune System

Informal Categories

  • Outdoor Activity
  • Physical Activity


To use this activity, learners need to:

  • see
  • see color
  • read
  • use keyboard
  • use mouse
  • be mobile
  • touch

Learning styles supported:

  • Involves hands-on or lab activities


Components that are part of this resource:

This resource is part of:

Access Rights:

  • Free access


  • American Association for the Advancement of Science


  • All rights reserved, American Association for the Advancement of Science, 2009

Funding Source:

  • National Science Foundation