Abstract:

Today there are lot of educational tools designed for mathematics. Open source software such as GeoGebra and Octave are bulky in their architectural structure. Also there is Matlab software which facilitates much more than what we ask for. Many of the computer aided online grading and assessment tools require integrating editors to their software. But there doesn’t exist suitable editors that cater for all their needs in editing equations and geometrical diagrams and graphs. Some of the diagram editors are GeoKone.NET, Tabulae, Cinderella 1.4, MyScript, Dia, Draw2D touch, Gliffy, GeoGebra, Flowchart, Jgraph, JointJS, J painter Online diagram editor and 2D sketcher. All these software are open source except for MyScript and can be used for the purpose of editing mathematical diagrams. But they do not fully cater the needs of a typical computer aided assessment tool or Educational Platform for Mathematics. This solution provides a Web based, lightweight, easy to implement and integrate solution of an html5 canvas that renders on all of the modern web browsers. The scope of the project is an editor that covers all the mathematical diagrams and drawings on the O/L Mathematics Exam Papers in Sri Lanka. The users can create and edit geometrical drawings, graphs and do geometrical constructions that require only Compass and Ruler from the Editing Interface provided by the Software. The special feature of this software is the geometrical constructions. It allows the users to create geometrical constructions such as angle bisectors, perpendicular lines, angles of 600 and perpendicular bisectors. The tool correctly imitates the functioning of rulers and compasses to create the required geometrical construction. Therefore the users are able to do geometrical drawings on the computer successfully and we have a digital format of the geometrical drawing for further processing.

Keywords:

Geometrical drawings, html5 canvas, toolbox.