One of my favorite hands-on activities for kids is to make Oobleck (a.k.a Goop.) Homemade Oobleck is inspired by the book Bartholomew and the Oobleck by Dr. Seuss. In the book, Oobleck is a sticky green glob that falls from the sky and causes a mess in the kingdom. This sensory activity won’t cause any problems like in the book but hours of fun and entertainment for kids.
Oobleck is non-Newtonian fluid. It acts like a liquid when it is being poured, but it acts more like a solid when it comes in contact with a force. You can grab Oobleck with your hand like it is a solid, but it will ooze out like it is a liquid.
How To Make Oobleck:
- 2 Cups of Corn Starch
- 1 Cup of Water
- 10 Drops of Food Coloring
- Shallow Bowl or Plastic Container
- Measuring Cup
1. In a shallow bowl, combine the corn starch and water. The mixture will be thick and hard to stir, so mix the ingredients by hand.
2. Add the food coloring and mix well. We used green food coloring to look like the Oobleck in the Dr. Seuss book, but you can pick any color.
Your students will love bringing the book, Bartholomew and the Oobleck by Dr. Seuss to life by making their very own Oobleck at home or in the classroom. In my classroom, I use this fun, hands-on activity as a sensory center all year long.