Esther's son made a clock face http://homeschool-math.wikispaces.com/triangle-in-circle (scroll down) with GeoGebra.
When you have a moment, make a clock face and then turn it into a stopwatch: http://www.screencast.com/t/uHxlUCgg
I have attached both the clock (starter) and the stopwatch (end) GeoGebra files.
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Also, notice how he connected our two exercises (the equilateral triangle and learning GeoGebra) - that was particulary wonderful for me - engagement and learning. (And I loved those computer games.)
Make a Stopwatch with GeoGebra - it is easy
Esther's son made a clock face http://homeschool-math.wikispaces.com/triangle-in-circle (scroll down) with GeoGebra.
When you have a moment, make a clock face and then turn it into a stopwatch: http://www.screencast.com/t/uHxlUCgg
I have attached both the clock (starter) and the stopwatch (end) GeoGebra files.
---
Also, notice how he connected our two exercises (the equilateral triangle and learning GeoGebra) - that was particulary wonderful for me - engagement and learning. (And I loved those computer games.)