While you are a student at BYU-Idaho, Mathematica is free to download and use. Please follow the instructions below to access your free download.
User ID Creation
If you have not already installed it from a previous class, head to Wolfram and create a user ID using your byui.edu email address.
Download Link
After creating your account (and possibly a brief verification window), you should be able to download Mathematica for free:
Video Tutorial
Watch a short video about installing and using Mathematica for the first time.