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.

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HALLOWEEN THEME

Learning how to make oobleck is one of the easiest science activities you can do on a small budget with kids of all ages and in a class setting or at home. I love how versatile our main oobleck recipe truly is and it provides a neat science lesson along with great tactile sensory play!

YOU MAY ALSO LIKE: Applesauce Oobleck and Pumpkin Oobleck

Oobleck is a classic science activity that can be themed for a number of holidays or seasons! Of course it’s easy to turn into a Halloween science experiment with a few creepy crawly spiders and a favorite theme color!

You can check out even more awesome Halloween science experiments towards the end, but I will share now that we have had a lot of fun with our bubbling brew and Halloween lava lamp this fall for some spooky science.

—>>>FREE STEM Cards and Guide For Halloween

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HALLOWEEN OOBLECK RECIPE

YOU WILL NEED:

  • 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 oobleck recipe is a ratio of 2:1, so two cups of cornstarch and one cup of water.

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.

Halloween Science Experiment How To Make OobleckPin

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 either. 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 back to liquid and drops back down to the bowl.

Once you have your oobleck mixed to the desired consistency, you can add your accessories as desired 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!

Halloween Art Activities

Go ahead and add some of these favorite Halloween art activities to your countdown!

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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