I just made my countdown to summer. We have 16 days left until summer fun! I am amazed every year how fast it goes. In April I taught my weather unit. We made a tornado in a bottle! All you need is a tornado tube like this one from Amazon. I also added a couple of drops of food coloring and glitter. The kids got to create a vortex by twirling and swirling the bottle.
We had to brainstorm what Earth would be like if there were no clouds.