Multimedia Pre-Algebra by Pro One (CD-ROM, 1990s) Key Details: Educational, Mathematics, Homeschool, Vintage Software, PC Games, Learning, STEM, Middle School, Tutoring, Windows, Retro Tech, Math Skills, Interactive, Study Aid >>> Check picture for overall detailed condition of this item. Cracked cases are okay, I do replace or add replacement cases if they are completely broken, if you do not want the broken case replaced let me know within the checkout process. #Retro