Who has ever heard of oobleck? I certainly have not, but apparently it is a well known thing.
It is a mixture of corn starch and water that acts as a solid when it is played with quickly, and it is liquid-y when it is played with slowly. SO interesting. I will provide you with a link at the end of this post where you can see the stuff in action.
This would be a great (and fun) lesson to discuss the different properties of matter and all those in-between stages that are so hard to define. It will really get kids thinking critically and questioning the facts that have always just been presented and accepted before. It will allow them to discover these properties on their own through their personal and motivated inquiries rather than through a textbook or SmartBoard resource. I LOVE things like this. I am all about those authentic experiences and kids discovering rather than me telling.
Again, it is a cheap resource and would be an especially great thing to do in small groups if you had the means to do it (parent help, parapro, volunteer, or we were lucky enough to have FOCUS students who were teaching science from the university).
Here are directions for how to make the oobleck:
Now, in the link I am sharing to the blog where I first learned about oobleck, she goes a step further with her kids and mixes in food coloring (not something for the classroom given the stained hands afterwards) and puts it on a cookie sheet on a subwoofer. The oobleck actually moves depending on the audio tone! It looks like so, so, so much fun and would be a great transition lesson in to sound waves, etc., but I am sure if you do not have the resources, your students will be perfectly happy to play with the oobleck and simply discuss matter. I guarantee it will lead to other conversations and learning topics anyways 🙂
Blog with dancing oobleck: http://www.housingaforest.com/dancing-oobleck/
There is also a Dr. Suess book called Bartholemew and the Oobleck. Obviously I have never read this since I had never heard of oobleck, but you can bet I will look in to it to further enhance the lesson. I suggest you do the same… I will always put a plug in for incorporating literature in to lessons (!!!!!!!!!!).
Also, I had to throw this last picture in for kicks. HOW MUCH FUN DOES THIS LOOK LIKE?!?! I would love to go out in the backyard (if I had one) and do this right now! I can’t wait to babysit my niece and nephews for a day… I get to go home and leave the mess. Even better! Take a look: