AVOW-Tutor

• AVOW-Tutor combines two representations for learning about electrical circuits
  • Conventional circuit diagrams
  • LEDs called AVOW diagrams. AVOW stands for Amps, Volts, Ohms and Watts.
• The user can constructs conventional circuit diagrams on the left.
• The AVOW diagrams are constructed in the large area on the right.
  • Each AVOW box represents one resistor. Height=current (I), width=voltage (V), gradient of the diagonal=resistance (R), area =power dissipated (P).
  • AVOW boxes encode Ohms law (V=I.R) and the power law (P=V.I).
  • Rules for drawing AVOW diagrams: series resistors are placed vertically on top of each other; parallel resistors are placed side by side; a well-formed AVOW diagram is a rectangle completely filled with AVOW boxes.
• Bottom left area is the tutorial authoring control panel.
• Bottom right area is a message window.
• AVOW-tutor can automatically check the consistency of the circuit and diagram.