Here is a cute activity that the kids loved!
You take 5 toothpicks and break them in half without completely breaking them apart. Place them on a plate with the broken ends together. Then drop a few drops of water into the middle with a dropper or a straw.....
.....and watch as the toothpicks move before your eyes and form a 5 point star!
The science of this is something to do with capillary action but I simply said to the kids that as the wood absorbs water they start to straighten out. They each wanted a turn at being the dinner magician and make their own star. A fun little after dinner activity!
Idea found at Almost Unschoolers