Two columns or rows of data in Microsoft Excel may contain useful information, but you'll just have a set of numbers. You can give spreadsheet viewers a graphical representation of those numbers by ...

Physics and Python stuff. Most of the videos here are either adapted from class lectures or solving physics problems. I really like to use numerical calculations without all the fancy programming ...

Plotting over actual images links math lessons with real-world relevance. A new graphing calculator from Casio lets students plot mathematical equations on top of real-life images and user-uploaded ...