Your Safer Source for Science

Since 1977

Address <p>P.O. Box 219 Batavia, IL 60510</p>
Phone 800-452-1261
Fax 866-452-1436

Take the measurement challenge! Accurately estimate the length, width, and height of a small plastic block and calculate the block’s volume. Then predict the mass of the block—without a balance—by using the block’s known density.


  • Measurement
  • Significant Figures
  • Volume
  • Mass
  • Density