Lifehacker: How to Unlock Microsoft’s Free Graphing Calculator in Windows 10

Lifehacker: How to Unlock Microsoft’s Free Graphing Calculator in Windows 10. “While your math teacher (or your kid’s math teacher) might not let them lug a laptop into their calculus class, I still think it’s awesome that Microsoft is finally giving the good ol’ Windows Calculator a boost of geekiness. If you thought ‘Scientific’ mode was fun, you haven’t seen anything yet—coming soon, to Windows 10, is a full-fledged graphing calculator.”