Comment by s1artibartfast

When I was in elementary school, the class ran a business making and selling box kites. It was part fundraiser, part economics, part engineering.

We took orders, budgeted materials, then built the kites out of straw, string, and paper over the course a quarter. Something like this [1].

I thought it was a really valuable introduction to econ and business for a group of 10 year olds. I remember calculating how long it would take to fulfill remaining orders, and if I could could make my own kite business and undercut the class price as a private business.

https://www.instructables.com/Tetrahedral-Kite-1/