Just in case you're unfamiliar with non-Newtonian fluids, click here, for a great science link, that explains all about them, in a kid friendly way. The fluid we used, was a mixture of 3 cups of corn starch to 2 cups of water. If you've never made this stuff before, give it a try. Not only is it science, but it's a great boredom buster - my little ones have been happily playing away with it all morning.
Before I gave it over to them for free play though, the older kids used it for our egg drop experiment. They poured it into a Ziploc type sandwich bag, and placed in an egg.
We noticed right away, that the egg floated on top of the liquid.
Then, we sealed the bag, and for extra protection (of my floor, not the egg), sealed that bag, into a sturdy freezer bag.
Finally, my son stood on a bench, held the egg above his head, and dropped it.
Much to our surprise, the egg survived unharmed. The solid/liquid state of our mixture, absorbed, and distributed the force from hitting the floor, away from the egg.
We repeated the experiment, but with water.
Which, didn't work out, quite as well for the egg!
It's great to be a homeschooler.