This applet lets the student familiarise with the representation of inequalities on a number line.
Original author http://tube.geogebra.org/user4380, on Geogebra Tube at http://tube.geogebra.org/material/show/id/278163
Modified on 24 Oct from my own version at http://tube.geogebra.org/material/show/id/1384165
