The BEST thing you can do to improve your SAT or ACT Math score is to get the TI-84 Plus calculator… and load it up with my programs.
It’s only $108 today on Amazon, with free shipping! This is the best deal I’ve seen. By comparison, Walmart has it for $119.27. Get it now: http://amzn.to/1vUA1IP
The TI-84 Plus is a great help to anyone taking the SAT or ACT. I have dozens of programs that will solve many typical problems in mere seconds. I can transfer these programs to your TI-84 Plus if you come to my office. BUT very soon they will be available for download on my website, with instructions and examples, so stay tuned!
By the way, there is no need to get any of the other fancier versions of this calculator. They won’t help you any more than this one does. But if you do want a certain color, well here are the other options: http://amzn.to/1yi4bKd
(Yes, the TI-83 Plus is compatible with the programs, too, so that’s another option as listed in the above link, but the USB cable must be purchased separately.)
If all you need is the USB cable, here it is:
USB cable for TI-84 Plus: http://amzn.to/1xAchur
USB cable for TI-83 Plus: http://amzn.to/1qAmCRx (Don’t buy the one above if you have the 83!!)