Dear readers,

The summer has been a lot busier than I expected, which is why there haven’t been any posts here for over a month now. But today, there is an exciting project I’d like to tell you about, and also get some ideas from you about it.

A few days ago I talked to someone who works in education, and was asked if I could do an hour-long show for primary-school students (Grades 4 through 6) about mathematics. The goal of the show would be to get them more interested in mathematics in a fun and informal way. I need to put together a proposal by the end of next week, and I already have some ideas, but would love to hear yours as well.

Here are some of the things I’ve thought about so far:

– card tricks with explanation (in particular, the 4 piles of 4 cards trick my dad taught me)

– a guitar piece involving harmonics, with an explanation of how these harmonics work

– some mental calculation tricks, like fifth-root extraction and guessing by binary search

But it would be nice to do something even more spectacular as part of this show. This is where you all come in. Please let me know any suggestions you might have in the comments to this post. To motivate you, I’m going to give a nice prize to the best idea that I end up using in the show!