Lesson Plan: Centimeters Mathematics • 1st Grade

This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to estimate length and use a ruler to measure objects in centimeters.


Students will be able to

  • estimate lengths of objects in centimeters,
  • identify objects about 1 cm, 10 cm, 50 cm, and 100 cm long,
  • read measurements on a ruler,
  • use a ruler to accurately measure objects in centimeters, starting from 0.


Students should already be familiar with

  • measuring using nonstandard units.


Students will not cover

  • measuring objects using meters or millimeters.

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