* Draw a scalene acute triangle ABC.
* Build the line containing the height corresponding to the side AC and BC.
* Paint them red.
* Determine the intersection of the lines containing the altitudes. * Names that point O. * Build the line containing the height corresponding to the AB side. * paint it red. * Move the triangle by a vertex, what you see?
Students working on the XO, better able to recognize orthocenter location in the triangle as the motion was carried by one of the triangle vertices. This observation was then registered in the class notebook, and all for different reasons do not bring computers to class and must work in teams. In addition it is considered a tool to work in the classroom without neglecting traditional construction in class notebooks. The enthusiasm of the kids makes for a little be used more in the classroom.
so they can master the MathGraph, installed on them by Professor Referrer Ceibal Plan, Prof. Susan Lauber.
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