[justify]I have been using some algebraic surfaces in the class room to show the concept of equation, non zero divisors law, simultaneous equations, intersection of conics and many other using the [url=https://imaginary.org/program/surfer]SURFER[/url] software of the [url=https://imaginary.org/]IMAGINARY.org[/url] platform. Guide about the use of algebraic surfaces in the class room [url=https://imaginary.org/sites/default/files/guia-surfer_2015-uruguay_0.pdf]Link to PDF[/url][br][br]But I was Unable to create the same surfaces in GeoGebra and I wanted them in GeoGebra because we all know about the advantages of GGB. Last month I solved the problem. (making one unknown of the surface's equation the subject and using a parametric surface with the [url=https://wiki.geogebra.org/en/Surface_Command]surface command[/url].) [url=https://www.geogebra.org/m/wpngjvuc]Complete guide in here: link [/url] (It is in Spanish I am working on the translation to English)[br][br][math]f\left(x,y\right)=z[/math][br][br]Surface command with parametric curve: [math]\left(r,t,f\left(r,t\right)\right)[/math][br][br]The goal is to create STL files and print most of the surfaces in Herwig Hauser's gallery [url=https://homepage.univie.ac.at/herwig.hauser/gallery.html]LINK[/url] [/justify]

Complete GGB on this can be found in here: [url=https://www.geogebra.org/m/wpngjvuc]LINK[/url]