@dment37 : 1²+2²+3²+4²+....+n² =(n(n+1) (2n+1) )/6 (proof 2) Visualization |Animation | Interactive applet @geogebra geogebra.org/u/daniel+mentr… #geogebra #math #science #iteachmath #mtbos #visualization #elearning @bancoche #physics • TwiCopy

Daniel Mentrard

@dment37

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Maths, Physics,visualisations, challenges , Geogebra Expert
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calendar_today11-01-2013 18:35:30

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Daniel Mentrard

@dment37

7 days ago

1²+2²+3²+4²+....+n² =(n(n+1) (2n+1) )/6 (proof 2) Visualization |Animation | Interactive applet GeoGebra geogebra.org/u/daniel+mentr… #geogebra #math #science #iteachmath #mtbos #visualization #elearning Bernat ANCOCHEA #physics