Pinterest is another excellent resource! I have found tons of activities there for anything and everything related to teaching. Pinterest is where I found this fun hands-on activity to help the kids understand the concept of solids, liquids, and gases.
For teachers who might be interested in an excellent supplemental resource to teach the states of matter, I highly recommend "Marvelous Matter Activities for Little Scientists"created by 2nd grade teacher, Mrs. Lamb, of whom I am a fan. These cards are part of her unit.
What my students really look forward to are our science experiments. Most recently, we did an experiment that I had pinned on Pinterest months ago. (Our Kinder friends did it too!) It was the perfect demonstration of physical change, one of the key concepts we have been studying about in our states of matter unit.
