Saw this post this morning from Gather Love Grow. It looked like a lot of fun, and was something I knew our boys would enjoy. I asked Lynn to let the 3 older boys make boats today after they finished school. Then we float tested them after I got home from work. All 3 of them sort of floated. They didn’t sink to the bottom of the water, but they didn’t exactly stay at the top. The best floater was created by our 6 year old. It floated nicely at the top of the water for several seconds before capsizing.
Then things got a bit crazy. They wanted to try and float many different combinations of Legos. Eventually, all the water got spilled all over the table, floor, and our 4 year old.
This was definitely a fun challenge. I would encourage you to go to the originating blog and check it out.