About this 3D model

I teach Linear Algebra to a small class of High School students. We took a few days to learn openSCAD and use the multmatrix function to explore some "real world applications". The kids in the class had no prior programming experience and I think openSCAD was a great way for them to learn some of the basics of programming. Their homework assignment was to design two objects, a building and a tree, by writing their own transformation modules using the multmatrix function (i.e. no using the built in rotate, translate, etc. functions, although union, difference, intersection were ok). Here are their buildings.