The Bridge Method

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Instructions

  • Read the given quantity and the unit you need to convert it to.
  • Build the bridge: drag or type each conversion piece into place so the units line up to cancel.
  • Cross out the matching units yourself, then tap Check Setup to confirm the bridge is built correctly.
  • Multiply straight across the top and the bottom to get your answer.
  • Use the Learn tab for a walkthrough, Practice to build skill, and Quiz when you're ready to be scored.
  • Check the Score Sheet tab anytime to see your overall progress and submit a score to your teacher.

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Key Concepts

Learn dimensional analysis (the "bridge method" / factor-label method) for converting between units by multiplying by conversion factors that cancel unwanted units.