Other
Federal Highway Administration: Si (Modern Metric) Conversion Sheet
Very complete chart of conversion factors for English to SI (metric) unit measurements and SI (metric) to English unit measurements. Includes length, area, volume, mass, temperature, illumination, and force & mass (stress).
Math Drills
Math Drills: Unit Converter
Download these free worksheets to sharpen your skills in converting units. Sheets focus on converting between a wide variety of measurement units including mass, length, volume, temperature, time, and many more.
PBS
Pbs Kids: Dinosaur Train Bridge Builder
This activity will help children use units to measure length, add two lengths to create a whole, and use words for describing length such as longer and shorter. Sheets of paper become pieces of wood as they construct a bridge for a...
Illustrative Mathematics
Illustrative Mathematics: How Long?
Students will investigate the attribute of length by using a common measurement tool such as snap or unifix cubes to directly measure objects in the classroom. Materials needed include various items to measure, a large set of cubes such...