They invented the catapult, figured out how to build one (and many ways that don't work) and explored mathematically what makes the strongest walls.
They explored all the possible combinations of numbers that can add up to ten, and they sorted out the numbers on the face of the clock -- and learned why counting by five is so useful.
Wow.
Between cuisenaire rods and lego, Jack's math education is both more interesting and more useful than mine ever was!
I am so glad Rod is such an excellent teacher. If I was on my own as Jack's teacher, these things might be as mysterious to Jack as they are to me.
Have I mentioned just how blessed Jack and I are?
Since they are exploring numbers they might enjoy The History of Counting. It's one of my favorite living math books.
ReplyDeletehttp://www.amazon.com/History-Counting-Denise-Schmandt-besserat/dp/0688141188/ref=sr_1_1?ie=UTF8&qid=1287195283&sr=8-1