[color=#ff0000]Please, do not use this link if:[/color][br][list][*][color=#ff0000]you attend the conference in person. [/color][/*][*][color=#ff0000]you are not registered in the conference. You can watch the conference [url=https://www.geogebra.org/m/nsz2esna]here[/url].[/color][/*][/list][color=#ff0000]Thank you for understanding![/color][br][br][size=150]To participate in the conference online, click here:[br][list][*][size=150][url=https://whereby.com/jku-stem]https://whereby.com/jku-stem[/url] - we can see you and hear you. Please, keep your microphone off. Turn it on only if you want to ask something :-).[/size][/*][/list][br][/size]