Determine how different measurements of the same object might yield different values. Provide as many reasons that you can think of.

Here's a math, science, and social studies activity: help your kindergartener become a "coin archaeologist" by examining how different coins look and feel.

introduction to organic chemistry. study what happens when polymer molecules are mixed with borax solution.

The goal of this science fair project is to determine which cheese grows mold the fastest: Vermont Cheddar, American, Brie, or Camembert?