I saw this structure in downtown Portland and read the information shown here. It mentions the original sculpture is one sixteenth the size of this. Search for my YouTube video on bao bao math problem
I am super impressed with this teachers online class page. She has great resources linked here that might be able to help us, though many of them we have already looked at. BUT another look is always good.
During math in Bill Donovan’s 4th grade class, students rotate between
workstations working on quick-response math exercises. Some are using math-drill
apps on the iPad, iPod touches, or laptops. And some are using old-fashioned
pencil and paper.