Lesson Plan: Rounding to Significant Figures Chemistry

This lesson plan includes the objectives and exclusions of the lesson teaching students how to express the precision of a value by rounding to the correct number of significant figures or decimal places.


Students will be able to

  • define decimal places and significant figures,
  • recognize that data should be recorded with the same precision with which they are given by the measuring instrument,
  • round values to a given number of significant figures or decimal places,
  • identify that the final value should not contain more significant figures than the least accurately measured quantity.


Students will not cover

  • scientific notation,
  • errors or uncertainties.

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