Abstract: Systems and methods are provided for displaying free-form drawing on a contact-sensitive display. A new contact on the display is detected by a computer. A determination is made by the computer as to whether a width of the new contact is less than a maximum width. When the width of the new contact is less than the maximum width, the width of the new contact is compared to a width of other current contacts by the computer. When the width of the new contact is less than widths of all other current contacts, the new contact is tracked by the computer using a first data structure. A release of the new contact from the display is detected by the computer. Data associated with the new contact is transferred from the first data structure to the second data structure by the computer when the new contact is detected as being released.

Abstract: An electronic system for providing assistance in teaching includes a teaching computer, a plurality of wireless tablets, a docking station arranged to receive the plurality of wireless tablets, a class configuration circuit, an educational content definition circuit, an educational session creation circuit, and an educational session management circuit. Also provided are a method performed by the system, a computer program for performing the above-specified method, and a storage medium including such a computer program.

Abstract: A system for providing electronic assistance in teaching. The system includes a plurality of touch tablets (T1, T2, TN), a teaching computer (PC, SRV), and a supervision circuit (SV) arranged to store the touch inputs made on all of the touch tablets and to play them back. In addition, the invention related to a method performed by the system, to a computer program for performing the above-specified method, and to a data medium including such a computer program.