Scientists have developed a programmable "molecular robot" -- a sub-microscopic molecular machine made of synthetic DNA that moves between track locations separated by 6nm. The robot, a short strand ...

An examination of programmed instruction indicates that it is as effective as the lecture-discussion technique for teaching economics when measured by student examination performance. Evidence ...

One of the skills necessary for the conductor of an ensemble is the ability to detect errors of pitch and rhythm in a rehearsal while examining a correct score. This study developed (1) a program to ...