Author: Ton Lecluse
basis for all drawing in maths education.
all common Windows and
The aim of Geocadabra is to enable all drawing exercises from first form up and until the final levels of ordinary education, advanced education and scholarship education. The programme especially focuses on drawing that is too complicated or too unclear for a simple blackboard or a graphic calculator and is ideally suited when further exploration of a maths problem is required.
Geocadabra can be set up to suit the needs of pupils in ordinary education, the first two years of advanced and scholarship education and those pupils in the final years of advanced and scholarship education. This way, while using the programme, only advanced pupils will encounter the more elaborate commands and applets.
What Geocadabra has to offer:
Beautiful basic shapes, sections, drawing methods, lines of view, many animations in ready-made applets. For instance, a surface can be lifted from the drawing in real size or it can be moved or tipped. Special applets for the measuring or lengths, angles and surfaces are available and, when required, a measurement tool will appear across the object. All the user has to do is place the tool in its desired position. All possible angles and lengths can be calculated, be it in exact figures (roots), in significant figures or just plain rounded off figures.
This feature also offers numerous basic shapes from which the most complex drawings can be constructed and built-in applets allow the user to explore. There is even the possibility of changing from a plane to a solid figure.
Functions and curves.
Apart from the option of working with all usual functions in two and three-dimensional figures, there is also the possibility of working with curves, parameter- or polar co-ordinate shapes and curves consisting of two variables. The graphs can be explored with the aid of numerous applets supporting, for instance, tangents, surfaces, movement and line multiplication, rotating objects, trajectory, intersections and everything else the graphic calculator has to offer in preparation of the final exams. However, there is one difference; now you can do it all in high resolution and in full colour!
The final years of advanced and scholarship education.
Growth diagrams, integral behaviour, differential equations, linear programming models (two and three-dimensional), recursion, dynamic demand and supply analysis, correlation and regression, statistics and probability calculation (for example, probability trees, probability distribution, probability paper).
The program allows for the use of 1-point, 2-point and 3-point perspective as well as all possible parallel projections.
Three-dimensional objects are shown in perspective and horizon, disappearing lines and points can be made visible. The built-in applets allow the user to investigate how all these hold up to a change in camera position or camera aim. They can even visualise basic mathematical constructions.
The teacher selects a
suitable classroom assignment to the mathematical subject at hand from the
The pupil can use the
programme with almost any mathematical assignment in the book that
With the aid of
Geocadabra, a pupil will be able to construct perfect drawings to
Perfect illustrations to
a test concerning a technical subject. Two and three-dimensional drawings
These drawings allow the
development of a step-by-step presentation supporting the approach to a
Each single drawing can
be investigated during a presentation by, for example, activating a
assignments, guiding pupils through the menu-infrastructure of Geocadabra,
Once a drawing concerning
an assignment from a book or test has been stored, it will remain
The programme is able to work on three different levels:
Ordinary education (=
This way, the inexperienced user will not be hindered by any advanced options the programme has to offer.
The programme offers the following possibilities:
A better understanding of geometry, graphs and probability calculus
because the drawings are of
programme covers almost every need you may have concerning the teaching of
You will be able to work far more efficiently due to the fact that all teaching materials are already included in this programme. But please do not let that stop you from developing your own materials with the aid of the endless possibilities this software programme has to offer!