This interactive resource from the physics department at Boston University illustrates Coulomb's law. The simulation allows the user to graph the dependence of the Coulomb force on the distance between charges.

The Physics Education Group at the University of Washington has been investigating student difficulties in drawing and interpreting graphs of moving objects. In the study reported here, students observe an actual motion...

This paper, presented at the 2002 Physics Education Research Conference, presents the results of a study intended to investigate students' cognitive processes when reading line graphs. The researchers developed a...