math911 is a great alternative to the 'free' homework that comes with traditional textbooks. I.e. MyMathLab, WebAssign, etc.
math911 can be run off a flash drive. My students start homewoork in a school lad on a USB and continue at home on their desktops. For the flash drive version download link is www.math911.flash.zip
Download the zipfile to a flash drive, extract. A math911 folder will appear. Open the math911 folder and click on the math911.exe file (no setup is required). Don't forget to activate math911 by RIGHT clicking on the ABOUT button and entering the code: essex
For free technical support contact Professor Martin Weissman: 347-528-7837