String Art & Parabola
www.geogebra.org/classroom/tkv6ftxu
Trigonometry&Art
www.geogebra.org/classroom/gapd49a4
Butterfly Symmetry
www.geogebra.org/classroom/u8yzcqrk
Parabola in Real Life
www.geogebra.org/classroom/szmpbbnp
GeoGebra Heart Function
