Charts are a great way to visualize large sets of data. Here's how to add a graph on Google Docs and edit it in Google Sheets.

Learn how to add & use the Draw tab in PowerPoint. It consists of drawing tools to draw on your slide. Make sketches with pen, pencil, and highlighters, etc.

Dijkstra’s algorithm was long thought to be the most efficient way to find a graph’s best routes. Researchers have now proved that it’s “universally optimal.” ...