Curated OER
Can You Measure Up!
Seventh graders investigate standards of measurement and metric units using a game to show the importance of standards of measurements. In this measuring lesson plan, 7th graders are grouped together and each group represents a foreign...
Scholastic
Scholastic News: Week of 4 1 13: Is the Kilogram Gaining Weight?
A metal cylinder used for setting the international standard of the kilogram has been slowly gaining mass over the years. This article describes the impact of that mass gain and what scientists are doing to shrink it back to size.