Rollercoastercalc
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Rollercoastercalc is the ultimate way to make math fun! Rollercoastercalc is much more then a standard calculator. There is always a roller coaster picture in the background and there is also a facts stream. With the facts stream, a new roller coaster fact appears at the bottom of the screen and the picture in the background corresponds with the fact.
Make math fun with Rollercoastercalc!