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1:13:04
Watch as Exploratorium staff and local teachers compete for the title of Iron Science Teacher. Each contestant has 10 minutes to make a science lesson out of a science ingredient. This is a Halloween edition of Iron Science Teacher, and today's secret ingredient is: Bones!

0:53:59
Watch as Exploratorium staff and local teachers compete for the title of Iron Science Teacher. Each contestant has ten minutes to make a science lesson out of a secret ingredient. Today's secret ingredient: pumpkins!