When it comes to good YouTube videos, I’m biased in favor of content made explicitly for the platform: media critiques, long-form investigations, and pointless tests of human endurance. “Outside In” ...
Here's a fun math puzzle to brighten your day. Say you've got four 4s—4 4 4 4—and you're allowed to place any normal math symbols around them. How many different numbers can you make? According to the ...
This as-told-to essay is based on a conversation with Deidre Kelly. It has been edited for length and clarity. This is my 14th year teaching sixth-grade math, and I enjoy it just as much as I did when ...
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