We're keeping up with our experiment in a new rhythm: a video every two weeks!

Now available: the second half of Challenge 08, which continues the paper ripping-theme, and provides teachers and students with yet another pedagogically sound reason to make a mess.

Challenge 08, Part 1 explored a simple procedure for ripping up a piece of paper. Challenge 08, Part 2 presents a new procedure, with a small twist that leads to a whole bunch of new problems to investigate!

Enjoy!

Math can be messy sometimes. Grab some scratch paper and get a rippin' with Challenge 08: The Confetti Problem (Part 1).

Also, I'm going to try out a slight adjustment to the usual format. I've typically published one video per month, and that video has contained both a main challenge and some extension or elaboration.

This spring I'm going to try separating those two aspects. There will be two videos per month, connected to the same theme. The first video will contain the main challenge, and the second will have questions that extend or augment the ideas from the first.

I'll be interested to hear your thoughts on the new pacing! Plus, I look forward to seeing some response videos about Part 1. Stay tuned for Part 2 in about two weeks!

We've been inspired by the internationalization (or is it internationalisation?) efforts of other video producers, like Minute Physics and Numberphile to launch the Collaborative Mathematics Translation Project.

In an effort to make our videos available to as many people as possible, we'd like to recruit help creating subtitles in languages other than English. Here's how you can help out:

1. Choose your favo(u)rite challenge video from the translation project page, and download the English subtitles (a file called "challengeXX_en.srt").
2. Open up the subtitle file in a text editor and translate the text into your language of choice. (Please avoid changing the numbering and time information, as these are needed to synchronize the text with the video.)
3. Use our contact page to let us know when you've completed a translation. We'll get the updated subtitle file from you, enable it as an option on the video, and post the file on the project page. We'd also like to add your name to our credits!

Mange takk på forhånd for deres hjelp! ;)