【實用工具app】Rollercoastercalc|最夯免費app-綠色工廠好玩App

Rollercoastercalc--------------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!