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ISBN: 978-972-8939-25-0 © 2010 IADISRDCL6 - Support activities to bilingual alphabetisation: The environment must offer childrenadditional activities to those used in their alphabetisation class.RDCL7 - Articulation in Libras: It is useful to carry our role playing activities, as well as otheractivities that encourage group learning, focusing on the ability to express signs.Requirements related to Visual Communication for Children between 7 and 10 years of age (RVCC):RVCC1 - Project Conceptualisation: The visual concept of the project must privilege the preferences ofthe target public, making use of fun activities and stimulating the children’s imagination.RVCC2 - Use of Colours: The environment must privilege the use of primary colours (red, yellow andgreen) both because children tend to prefer these colours, and also because colours may be explored asemphatic elements to be associated to content.RVCC3 - Attractiveness: Content must be less verbal and more visual.RVCC4 - Emphasis on Different Reading Types: The tool must explore iconic, indicial and symbolicreading, as children must first learn to read images.RVCC5 - Use of Fonts: The environment must contain legible fonts sized between 14 and 24 pts,preferably capitalised, with a clear distinction between the letters “a” and “g” and with texts aligned to theleft.RVCC6 - Use of Shapes: The environment must also privilege circular or round shapes because childrentend to prefer them.RVCC7 - Interaction Stimulation: The environment must offer children the opportunity to interact withone another.RVCC8 - Illustration Style: The style to be adopted for illustrations and drawings should be rectilinear,with primary colours, naturalism, a fairly absent context and geometrical lines.RVCC9 - Use of Visual Vocabulary: The interface must make use of visual vocabulary (signs andarrows), making associations with other educational contents and making visual orientation easier.Requirements related to the Expression of Libras Signs (RELS):RELS1: The expression must preserve all elements of the sign, including its facial and body expression.RELS2: The representation of the sign must strive to avoid ambiguities;RELS3: When it comes to materials target to children, it is important to make abundant use of differentand colourful illustrations of the signs.RELS4: The interpreter-character, be it in an image, animation or video, must respect all the current rulessurrounding Libras interpretation.RELS5: The system must allow users to have control over the display of images and videos, being usersalso capable of enabling this control function.3.2 Environment ProposalIn the present subsection, based upon the abovementioned requirements, we shall look into any functions ofthe application in form topics:• Real-time communication amongst users;• Group Communication – discussion forums;• Translation Portuguese – Libras and Libras – Portuguese;• Writing and sending online messages;• Story-telling;• Role Playing Game;• Display of Libras expressions;• Libras practice;3.3 Preliminary Architecture of the EnvironmentFigure 1 describes the preliminary architecture of the environment. The structure comprises a few userprofiles, various software modules, and several input and output devices. We shall describe these elementsbelow.364