About two weeks ago, we took a field trip to The Science Factory. They had a bunch of hands-on FUN activities. Here are just a few:
Here, we poured sand into a funnel that was hanging on a string. Then we swung it in any direction to watch it make a design. There were two different funnels. This one was hanging on two strings at the top and the other one was only attached to one string.
Here, we poured sand into a funnel that was hanging on a string. Then we swung it in any direction to watch it make a design. There were two different funnels. This one was hanging on two strings at the top and the other one was only attached to one string. 
This one was one of my favorites. There were two little plastic men attached to miniature parachutes which we stuffed into a hole in the side of a huge tube. It fired them up through the tube into the air and came floating down to the ground.
Here, Jacob is building a dragster out of k'nex. They give you instructions so that even I could build one.
My dragster won the whole time because Mom's and Jacob's engines were broken.
This was my FAVORITE. We had to try build a dam out of metal blocks. After a while the water pressure built so much that it pushed the blocks out of its way!