I took the kids on a mini walk yesterday along a path near our house.  We needed fresh air and a change of scenery.  Adrianna found this:

We stopped and examined it.  We observed that it was growing on a vine in a swampy area.  We took a few home with us.  Then, googled it and we learned together that it is a prickly cucumber.  Very fun. 

Then, Adrianna proceeded to pick it apart completely layer by layer and bit by bit.  Later, she "narrated" it to Daddy, "we found a pokey cucumber and it had seeds in it.  It grows on a vine!"

Ok.  Maybe I can do nature study.