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Module 2
Relate Addition and Subtraction to Length 


Throughout this module, students will: 
  • measure length by selecting appropriate tools
  • measure lengths using different units to compare
  • estimate length using centimeters, inches, feet, and meters
  • measure to determine differences in length 
Terminology Definition Illustration
Centimeter A metric unit of length.
100 cm = 1 meter
Estimate A number close to the exact amount.
An estimate tells about how much or about how many.
Meter A metric unit of length equal to 100 cm
Metric System A system of measurement based on tens.
Unit What is used to measure the length, height, or heaviness of something.

Additional Resources



Dr. Peter Smith, Superintendent

P.O. Box 606
DeWitt, NY 13214

Phone: (315) 445-8300

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