An interactive applet and associated web page that demonstrate the volume of a cube. A cube is shown where the edge length can be changed by dragging. The volume is continuously recalculated as you drag, and a unit cube grid is superimposed on the cube to illustrate the volume graphically. The calculations can be turned off for class discussion.

The web page has the formula for the volume calculation, and a discussion about the subtle distinction between the volume of a cube and the volume inside the cube.

Applet can be enlarged to full screen size for use with a classroom projector. After use in the classroom, student can access it again from any web browser at home or in the library with no login required.

This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.