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{{video|src=qHDLHIzBo1U| | {{video|src=qHDLHIzBo1U | ||
|title=A group of students jointly progress on their task. | |realtitle=Geogebra group work | ||
|name=Geogebra-group-interaction.m4v | |||
|duration=2:03 | |||
|title=A group of students jointly progress on their task to investigate the relationship between area and perimeter of rectangles. | |||
|series=Abel rectangles | |series=Abel rectangles | ||
|project=OER4Schools | |project=OER4Schools | ||