nearby partner who hopefully has made a different interesting arrangement. record it and continue. keep going for a few minutes. do not change your number. your goal is to see your number in as many ways as possible.
21st century tools. i have a couple of things to say here. one is that it matters that these are circles. i can show rows and columns with circles, and i can also show 7 as a hexagon with a center. i can’t do that with the plastic square tiles that were in my classroom in 1999. but if i have access to a laser cutter, i can turn $2 worth of walnut 