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World 4 · Footprints and Height · 10 min · PRO

Stride and speed: walking or running?

What a line of footprints adds to a single print

PRO · Forensic Science

World 4: Footprints and Height is part of PRO

The first world of Forensic Science is free. PRO opens the other 22 lessons in 6 worlds — simulations, quizzes and all.

  • Reading a footprint: what the shoe says
  • From foot to height: estimating a person
  • DNA as an ID: what is (and is not) in a profile
  • Copying DNA: the PCR idea
  • Three temperatures, one cycle
PRO includes
  • All 60 labs — every world, every lesson
  • Practice exams and certificates

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