@jsiehler Thank you for pointing that out - we'll put in a note about it. Meanwhile, my math circle is 7th-10th (mostly) and Paul and Japheth's math circles are high school. All the chapters have been tested on these groups. I have also modified some for teachers (and other adults re-exploring math). Lastly we threw in some short/quick/lower level companion items, for younger siblings, etc.

jsiehler@jsiehler@mathstodon.xyzkickstarter, math circle book

@pkra Looks nice! It's a little hard to tell from the Kickstarter page what age-group or level of sophistication they intend for the audience of the book (the learners, that is, not the math circle leaders).