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Keeping Healthy

Science for nine- to 11-year-olds. The lungs, how we breathe, and the damaging effects of smoking; the heart as a pump for circulation; and keeping fit and healthy with good diet and exercise.

10 minutes

Last on

Thu 21 Jan 2010 11:20


  • Tue 28 Apr 2009 11:10
  • Thu 21 Jan 2010 11:20