A version of Mathematica is bundled for free with the Raspbian operating system on Raspberry Pi devices for non-commercial use.
Most universities and research institutions provide Mathematica for free to their students and faculty. Check your school's software portal. Wolfram Mathematica 12 Activation Key FREE Down...
For many mathematical computations, the free version of Wolfram|Alpha provides the same underlying power as Mathematica through a web browser. A version of Mathematica is bundled for free