In Preview Activity 0.3.1, there is a link to the GeoGebra applet http://www.geogebratube.org/student/m93018. This link was broken. A redirect was provided to https://www.geogebra.org/m/juXYTN6d, which I assume is what the link should now say instead.
In Preview Activity 0.3.1, there is a link to the GeoGebra applet http://www.geogebratube.org/student/m93018. This link was broken. A redirect was provided to https://www.geogebra.org/m/juXYTN6d, which I assume is what the link should now say instead.