EXPERIMENTAL PROCEDURE

All participants had used personal computer and most of them had experience using an interactive whiteboard. All participants had played a puzzle before, and all participants knew how to solve or place puzzles pieces.

The experiment consisted of three conditions: no audio or visual cues; audio cues only; and both audio and visual. The first two conditions will be counter-balanced with audio-visual condition, which was presented last.

Before sessions began, participants were instructed on how to complete task. In each trial, participants stood around the DT table to perform task. Exp

erimental participants were required to build five temporal stories using virtual puzzles on the DT. They had to manipulate the pieces by moving them into the correct sequence placement. The completion of the three trials was followed by a questionnaire and questionnaire was followed by an informal interview.

Apparatus Used - The MERL Diamond Touch Table

A 76 cm x 60 cm MERL Diamond Touch table, a multi-user-simultaneous-touch surface, was used for observation. The display image w

as projected from above at a resolution of 1024 by 768 pixels. Sound was presented through the computer speakers. The system was powered by using a computer.

Interaction is connected by the use of the fingers, hand or conductive object. A DT can process multiple inputs of up to 4 people. Each user stood on a separate receiver, this is a thin rectangular mat (60 cm x 30 cm) which was locat

ed on the floor, around just under the touch table. Sensors embedded in the screen of the tabletop transmit signals from the touchable surface through the user's body to the mat. This information is used by the tabletop to differentiate between different users and coordinate their inputs.

An iron frame was used to hold the projector that was mounted at a height approximately 122 cm from the table to the projector. The DT table was placed on the table that was approximately 45 cm in height, this height was suitable as children was able to reach all corner of the table top surface.

Iron frame used to hold projector

I probably think I will have to insert a photo of a proper set up of the Diamond Touch table in final thesis.