Interactive tool: Practice estimating relative sizes

Posted on August 26, 2010 by


Interactive tool for practicing comparing two lengths, areas, and volumes. It is VERY TRICKY to judge how area and volume change with size. This tool gives you good practice. Good for physics problems to do with pressure, gravity, and other places where area or volume are important.

Explore size estimation in one, two and three dimensions! Multiple levels of difficulty allow for progressive skill improvement.



PhET is a collection of online science and math simulations sponsored by the University of Colorado, Boulder. They can be run from any web browser provided Java/and or Flash are installed on your local computer.