Geometric Design in Multimedia – Virtual Clipboard

The "Virtual Clipboard"

The “Virtual Clipboard”

Like it happens when a learner uses a real board, the “virtual clipboard” contains an area for drawing and the usual working tools of the geometric design, i.e., pencil, ruler, compass and rubber.

The “virtual clipboard” can be used in three different modes: in the first module it simulates a real clipboard; in the module “procedure” it acts as a tutorial that shows step by step the classic procedures for solving geometric problems; and the module “exercise” when the learner asks to leave the “clipboard”, it evaluates whether the exercise is correct.

As the purpose of this graphical environment is to simulate the use of a real drawing board, there is no tool that automatically builds a geometric figure or solves a problem. The learner should solve the exercises as he/she does in the absence of the computer.

Click here to see the example

He/She, however, will have some features that are not found in traditional clipboard. Learners will have, for example, buttons to save the contents of their work – allowing them to send it to conference remotely, to open other work that was previously made and to print. There are other clear advantages like the use of rubber, as it leaves no trace.

CD-ROM “The Geometric Design in Multimedia”

Due to technical limitations of the video monitor resolution, the succession of errors caused by poor location of the points during the exercise solution led the program to interpret as incorrect a technically correct exercise. The solution implemented was: at the intersection of two lines will generate a new object, a point, which has the property of attracting the cursor. The objective of obtaining maximum accuracy was achieved, since the program improved its success rate when evaluating the exercise.

The sliders have the instrument format used at the time (pencil, rubber, compass etc.) and should be used as such. The toolbox can be positioned anywhere on the screen, and does not produce any special effect, preventing its use becomes tiring.

The “Virtual Clipboard” also has a tutorial and online help to facilitate the understanding of its use.

Eduardo Stefanelli

Engenheiro por profissão, professor por vocação

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