Curated OER
It Takes Ten
Review and use standard units of measure with your math class. They move from station to station estimating and measuring length, volume, weight, and area. At each station they estimate and measure, and then compute the difference...
Khan Academy
Khan Academy: Estimate Volume (Milliliters and Liters)
Practice estimating the volume of real life objects using milliliters and liters. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.