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Proficient-with-GeoGebra' Example participant GeoGebra files - Learn Implement Share
Fostering students' development of the concept of angles using technology - Document - Gale Academic OneFile
Adjacent angles on straight line (3 angles) – GeoGebra
Planar Linkage Analysis using GeoGebra
Lesson plan - angle sum of triangle
Straight Angle – GeoGebra
angle sum of a triangle Archives - Math and Multimedia
Vertically Opposite Angles and Angles in Straight Line – GeoGebra
Geogebra Teaching Mathematics
using sliders in GeoGebra to visualise parameters