Tuesday, 14 April 2009 | 1 Comment
I need to learn to use GeoGebra because it looks like a fantastic app, it’s free and shortly our students will have their own netbooks, itching to use them. I find the best way to learn new software is to do something with it that you need.
With Year 8, we’ll soon look at the Circle, starting with parts of the circle. I would normally do a matching activity – given names and definitions, students match those to a diagram. I will still do that, but want to also show them these parts and how they are different to each other – hence GeoGebra.
I’ve put together an interactive GeoGebra widget, Parts of a Circle. To use it, just turn on/off the various parts. Also make sure you move some of the points to see how a part changes, e.g. sectors can be big or small or a quadrant always has an angle of 90°.
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Simon Job — eleventh year of teaching maths in a public high school in Western Sydney, Australia.
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