Weekly Tribes: 2017-2018: “nrich” math

This is from Carrie, a teacher and current student in the Tribes Basic Online Course (BOC).

I am a math specialist and regularly get tasks from a fantastic website “nrich” from University of Cambridge. They have a number of great “team-building” tasks where students have to problem solve in a group. The great part is that it is not possible to solve the problems alone. Here is one sample:
https://nrich.maths.org/6936