Now, i’m not much of a science brain but this is one ridiculously fun lesson that kids love.
Today we made Oobleck. For those of you that don’t know about oobleck it is about time that you did, because it is the most amazingly crazy stuff. It is a non-Newtonian fluid that acts like a liquid and solid at the same time, see this video.
It is an easy recipe that is made purely from cornstarch or cornflour and water… see here for instructions.
Oobleck is explained at Science and Kids as:
“Oobleck is more commonly known among science teachers as the name for a substance made of cornstarch and water that peculiar ability to act like a liquid and solid at room temperature. Scientifically speaking, oobleck is a type of polymer. This means that it is made of very long chains of repeating molecules (monomers). Oobleck is also a non-Newtonian fluid, which means that its ability to flow changes when different amounts of pressure are applied to it. More simply, if you squeeze oobleck, will become brittle and crumble. If you just let it sit in your hand, it will drip and run like thin white school glue. Sound interesting? Try making some and explore it for yourself!”
To start the lesson off I used the first half of this video from You Tube by Kid Science.
It’s great because it’s hosted by a 4? year old who explains it all very articulately (honestly!) My kids really enjoyed being taught by this kid! We then broke off into groups and made our own ooblecks! This was great fun and kids being kids loved getting in there with their fingers and trying out this amazing stuff.
For my non-science brain it was so fantastic having these resources on tap to ensure my kids were getting the correct explanations for the concepts they were learning. It’s also great giving them the chance to hear explanations given in different ways, as different kids understandings of how it worked, clicked more with different video’s/explanations. And what I liked even more is that most of these video’s were MADE by the kids!
**warning** art shirts, newspaper and clothes nearby are a must!!
As the session progressed we talked about liquids and what we knew about them, then solids. The kids then had a go at trying to make the oobleck into a solid, making it run like a liquid and turning it back into cornstarch. All in all an extremely messy lesson but SO much fun.
Am going to continue the lesson tomorrow with the rest of the Kid Science video and also this one that show people running across a pool of Oobleck… really is amazing stuff!
More ideas with Oobleck…
Literacy: Link it to the Dr. Seuss story Bartholomew and the Oobleck, here’s a video of the story
Visual Art: Colour the oobleck with food colouring (warning: dyed hands!) and create awesome dribbly/spotty art that dries in layers!
Written Language: This is a great literacy experience activity as it is very rich is oral language and descriptive words. Get the kids sharing words as they play – write them down. Ask the kids to recount the experiment or their personal feelings in writing. Get creative and get the kids to come up with a new story that involves the oobleck!