The girls made use of the last of our toothpicks, and a bag of stale marshmallows, to create three dimensional models of Sierpinski's triangle, following instructions from the Fractal Foundation, in New Mexico.
They started with flat triangles...
...and then built up...
...connecting smaller tetrahedrons...
...into larger ones (click the Fractal Foundation link above, to see step-by-step instructions).
They wanted to keep going, but we ran out of toothpicks, which have now been added to the grocery list.
In the meantime, the younger children are making good use of the new Lego playground.
I got quite a kick out of it, as the girls were building, and G (age 11) announced, "This is fun."
"Of course it's fun," I said. "It's math."
"Math isn't fun," both girls answered in unison.
"But, this is math, and you just said it was fun."
They weren't totally convinced it was math, but even it was, they still thought it was fun.
It's great to be a homeschooler.