One embodiment includes a computer-implemented method and system in a network environment using at least a display and a detached sensor. Another embodiment includes a computer-implemented system helping a user learn using a detached imaging sensor. In yet another embodiment, a computer-implemented system monitors automatically more than once a user's behavior while the user is working on materials. Through monitoring the user's voluntary or involuntary behavior, the system determines what to present by the display. The presentation could include providing rewards, punishments, stimulation, and other materials. The system can also react by asking the user a question. Based on the user's response, the system may change to more appropriate materials, or different presentation styles.