Do you want to try a little spooky science and sensory play this fall? Our Halloween Oobleck Recipe is perfect for your young mad scientists! Halloween is a fun time to try science experiments with a spooky twist. We love science and Halloween, so we have tons of fun Halloween activities to share with you.
Halloween Oobleck Recipe
I love how versatile our main oobleck recipe is; it provides a neat science lesson and great tactile sensory play!
Check out more awesome Halloween science experiments towards the end, but we have had a lot of fun with our bubbling brew and Halloween lava lamp.
Supplies:
- 2 cup cornstarch
- 1 cup water
- Food Coloring (optional)
- Halloween play accessories (optional)
- Baking Dish, Spoon
How to Make Oobleck
Oobleck is made with a combination of cornstarch and water. You will want to keep additional cornstarch on hand if you need to thicken the mixture. Generally, the recipe is a 2:1 ratio, so two cups of cornstarch and one cup of water.
💡Read about Oobleck Science [here].
1. In your bowl or baking dish, add the cornstarch. You can start mixing the oobleck in a bowl and then transfer it to a baking dish if you prefer.
2. If you want to give your oobleck a color, add food coloring to your water first.
Remember that you have a whole lot of white cornstarch so you will need a good amount of food coloring if you want a more vibrant color. We added yellow food coloring for our Halloween theme!
3. You can try mixing up your oobleck with a spoon, but I guarantee you are going to need to get your hands in there at some point during the mixing process.
The Right Oobleck Consistency
There is a gray area for the right oobleck consistency. First, you don’t want it to be very crumbly, but you also don’t want it to be very soupy. If you have a reluctant kiddo, hand them a spoon to start! Let them warm up to the idea of this squishy substance. Never force them to touch it, though.
Oobleck is a non-Newtonian fluid, which means it is neither a liquid nor a solid. You should be able to pick up a chunk of oobleck and form it into a ball before it turns to liquid and drops into the bowl.
Once your oobleck is mixed to the desired consistency, you can add your accessories and play!
TIP: If it’s too soupy, add cornstarch. If it’s too hard and dry, add water. Only add in small increments till you get the desired consistency.
More Halloween Science Fun!
Printable Halloween STEM Activities Pack
150+ Pages of Halloween-Themed Materials!
This Halloween project pack is suitable for home, school, and group use for kids in grades Kindergarten through elementary but is scaleable for many ages and abilities.
What’s Included:
- 25+ Halloween theme science and STEM activities with printable sheets, instructions, and helpful information all using easy-to-source materials perfect for limited-time needs. Includes a Halloween engineering pack with fun, problem-based challenges for kids to solve!
- The skeleton activity pack includes building a skeleton challenge and a coding challenge! Try a skeleton bone bridge-building STEM challenge!
- Halloween theme brick printable activities for hands-on learning with math that is perfect for early finishers or home fun and reinforces basic math concepts.
- Bonus fun pack includes games and activities to round out your Halloween theme, such as I Spy, bingo, matching, Would You Rather cards, scavenger hunt, word search, A-Z Halloween hunt, and a coloring page.
- The Halloween STEAM Pack includes artist-inspired projects by Warhol, Lichtenstein, and more!
Free Printable Halloween Worksheet
Add this quick and free Witch’s Brew printable to your activity! Instant download here.
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