← Back to all of your playlists

Playlist: Bookmarks

The Personalities of Rocks

What would an igneous rock be like? Would it get along with a sedimentary rock? Could they handle the hot personality of a metamorphic rock?

Math Curiosity: The Coloring Problem

No video gets me more email from students! How few colors can you use to color in any map so that no two, neighboring regions are the same color?