Parents and Teachers: MrNussbaum XTEND is now only $12.00 per year ($1.00 per month) for access to ALL PROGRAMS for the 2016-2017 school year if you purchase over the summer and fall (until December 1). Click HERE to learn more.
Step 2.) Click on the elements at the bottom of the right to begin collisions. The collisions cause Northern Lights displays. You can click on one of them, all of them, or the same one over and over. You can also control the intensity of the collisions by adjusting the “Collision Intensity” Meter.