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Math Is Fun
Math Is Fun: Metric Length
The different units used to measure metric length are described, with comparisons to real world objects. A wonderful number line also shows the relative sizes of things all the way from a quark to the universe in powers of ten.
Math Slice
Math Slice: Length
This resource allows students to practice converting metric or customary units of length. Students are able to select parameters that include metric or customary units and difficulty level. There are ten problems with instant feedback...
Illustrative Mathematics
Illustrative Mathematics: 7.rp Track Practice
Angel and Jayden were at track practice. The track is $\frac25$ kilometers around. Aligns with 7.RP.A.
Math Is Fun
Math Is Fun: Metric Speed (Velocity)
Simple definitions explain how speed and velocity are related. A brief list of examples will show you different speeds that you observe in real life situations.
Math Is Fun
Math Is Fun: Metric Area
The relationships between metric units of area are explained, with examples of how to calculate area.
The Math League
The Math League: Length
This site gives conversions from metric to metric as well as providing abbreviations for each.
Khan Academy
Khan Academy: Metric Units of Length Review
Metric units of length (millimeters, centimeters, meters, and kilometers) are reviewed and practice problems are provided.
TeachEngineering
Teach Engineering: How Big?
Students teams determine the size of the caverns necessary to house the population of the state of Alabraska from the impending asteroid impact. They measure their classroom to determine area and volume, determine how many people the...
University of Waterloo (Canada)
University of Waterloo: Metric 4
Test your knowledge at metric conversion by answering 30 questions on distance, length, volume, and weight.
Math2
Math2.org: Weights and Measures
This resource provides information on weights and measures, including unit conversion tables.
Khan Academy
Khan Academy: Estimating Length (Mm, Cm, M, Km)
Practice estimating the length of real life objects using metric units. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Convert to Smaller Units (Mm, Cm, M, & Km)
Practice converting a metric measure of length to a smaller unit. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.