Science, Sensory Play, Fine Motor Skills, Color Recognition
Oobleck Experiment - Everything You Need to Know! - 7 Days of Play

Oobleck Experiment – Everything You Need to Know!

oobleck science experiment with corn starch and water

Have you ever heard of oobleck, also known as goop? It is one of the coolest sensory bases! This oobleck experiment only take a few minutes to set up, but will results in such lasting fun and playtime! Since the ingredients are non toxic it is safe for even the littlest of toddlers, but still so fun for older kids! Keep on reading for all the details you ever need to know about oobleck!

Oobleck Experiment – Discovering a Non Newtonian Fluid

If you are looking to do a fun messy sensory play activity with your little one, then this oobleck experiment is for you! The consistency of this rainbow oobleck is the best! It’s both a liquid and a solid depending on how you play with it. This type of fluid is called Non Newtonian.

All activities should be supervised by an adult. As an Amazon Associate I earn from qualifying purchases. This post may contain affiliate links.

Skills: 

Ages: 

Prep Time: 

How to Make This Oobleck Experiment

 

Oobleck is simply the combination of water and corn starch. You can also make it more vibrant by adding in a pop of color. Make one color, or make them all like we did! Once I made the rainbow oobleck (see the how-to below!), I added it to one bin, then added some water into the other bin. The bin of water is critical! Even my mess-loving kids still want to clean their hands after playing with this ooey gooey oobleck! Having the water nearby was a lifesaver because my kiddos can easily wash his hands when they got too sticky and then keep on playing!

How to Make This Oobleck Experiment

Oobleck is simply the combination of water and corn starch. You can also make it more vibrant by adding in a pop of color. Make one color, or make them all like we did! Once I made the rainbow oobleck (see the how-to below!), I added it to one bin, then added some water into the other bin. The bin of water is critical! Even my mess-loving kids still want to clean their hands after playing with this ooey gooey oobleck! Having the water nearby was a lifesaver because my kiddos can easily wash his hands when they got too sticky and then keep on playing!

oobleck science experiment with corn starch and water

Tips on Making and Disposing Oobleck

What color to use? Making oobleck is so simple, it only takes a few minutes! When adding color, I prefer to use diluted liquid watercolor because it is washable! Using it prevents stubborn stains that are more likely with food coloring. When mixing in the color, I like to add the color first to the water as it is easier to mix in!

Should I use a 1:1 ratio? Lots of recipes will say to do a one to one ratio of corn starch to water. However, since I add the color into the water, I prefer to slowly add the water into the corn starch mixture. Stop adding the water when the mixture can be squeezed into a solid and then turns into a liquid when your palm is open.

Mixture too soupy or too hard? If your mixture is not turning into a solid when squeezed, just add a little more corn starch. If your mixture is too hard and not turning into a liquid when held in a relaxed hand, then add a little water!

Tips on Making and Disposing Oobleck

What color to use? Making oobleck is so simple, it only takes a few minutes! When adding color, I prefer to use diluted liquid watercolor because it is washable! Using it prevents stubborn stains that are more likely with food coloring. When mixing in the color, I like to add the color first to the water as it is easier to mix in!

Should I use a 1:1 ratio? Lots of recipes will say to do a one to one ratio of corn starch to water. However, since I add the color into the water, I prefer to slowly add the water into the corn starch mixture. Stop adding the water when the mixture can be squeezed into a solid and then turns into a liquid when your palm is open.

Mixture too soupy or too hard? If your mixture is not turning into a solid when squeezed, just add a little more corn starch. If your mixture is too hard and not turning into a liquid when held in a relaxed hand, then add a little water!

If I make all the colors in one bin, will they mix up? Yes they will! To avoid all of your beautiful colors immediately combining into a green or brown, use separate containers. One of my kids favorite. setups was when I made only the primary colors in separate bins and then they experimented with color mixing and creating secondary colors.

What if my kid tastes the oobleck? When using food coloring, oobleck is taste-safe. However, your child will quickly realize it tastes disgusting! As with all sensory bases, do not encourage tasting and always supervise.

How do I clean oobleck up? For these types of activities, it’s best if you set them up outside for easy clean up. I literally just hose everything down. It is safe for the grass. If playing outdoor is not an option, place some towels on the ground. Mix what is left of the oobleck with enough hot water to completely dilute it. With the water running in the sink, add small amounts of the mixture at a time to avoid the cornstarch from re-solidfying and clogging the drain. For oobleck on the floor, it can be easily wiped up or vacuumed when dried.

Can I store oobleck for later? Yes, you can store it in an air tight container. However, the cornstarch will separate from the water so it will have to be remixed. Discard if black dots are visible as this is mold.

If I make all the colors in one bin, will they mix up? Yes they will! To avoid all of your beautiful colors immediately combining into a green or brown, use separate containers. One of my kids favorite. setups was when I made only the primary colors in separate bins and then they experimented with color mixing and creating secondary colors.

What if my kid tastes the oobleck? When using food coloring, oobleck is taste-safe. However, your child will quickly realize it tastes disgusting! As with all sensory bases, do not encourage tasting and always supervise.

 

How do I clean oobleck up? For these types of activities, it’s best if you set them up outside for easy clean up. I literally just hose everything down. It is safe for the grass. If playing outdoor is not an option, place some towels on the ground. Mix what is left of the oobleck with enough hot water to completely dilute it. With the water running in the sink, add small amounts of the mixture at a time to avoid the cornstarch from re-solidfying and clogging the drain. For oobleck on the floor, it can be easily wiped up or vacuumed when dried.

Can I store oobleck for later? Yes, you can store it in an air tight container. However, the cornstarch will separate from the water so it will have to be remixed. Discard if black dots are visible as this is mold.

Materials

  • Water for mixture
  • Water for separate hand-washing bin

Step-by-Step Instructions 

Step 1

Place 1 cup of corn starch in a bowl.

Step 2

Measure 1 cup of water and add in your color.

 

Step 3

Gradually add the water to the corn starch, but do not add all at one time. You’ll want to slowly mix it in so as not to add too much water. The mixture is ready when it becomes a solid in your hand when you squeeze it and then a liquid when you relax your palm.

Step 4

Place a bucket of water nearby for a quick hand-washing station!

Step 1

Place 1 cup of corn starch in a bowl.

Step 2

Measure 1 cup of water and add in your color.

Step 3

Gradually add the water to the corn starch, but do not add all at one time. You’ll want to slowly mix it in so as not to add too much water. The mixture is ready when it becomes a solid in your hand when you squeeze it and then a liquid when you relax your palm.

Step 4

Place a bucket of water nearby for a quick hand-washing station!

Educational Benefits of This Oobleck Experiment

Yes, even creative messy play can be educational for your kids! Making oobleck is a fun science experiment, sensory experience, and allows for great opportunities to learn colors and strengthen fine motor skills!

Did you know that sensory play can cause the brain to make new connections and grow? This is one of the many reasons I love sensory play! Add some cups and spoons and this will also help your child strengthen their fine motor skills. See our full list of sensory activities for more sensory play ideas!

Older kids can enjoy making the oobleck, experimenting with the amount of corn starch to water to make the perfect non newtonian fluid. They will be amazed to see how the mixture. can be both a solid and a liquid at the same time.

oobleck science experiment with corn starch and water

 If you makes lots of oobleck, you could even try to walk on top of it! Kids will see that if they walk quickly it will stay solid, but if they walk slowly, their feet will sink into the liquid!

oobleck science experiment with corn starch and water

Educational Benefits of This Oobleck Experiment

Yes, even creative messy play can be educational for your kids! Making oobleck is a fun science experiment, sensory experience, and allows for great opportunities to learn colors and strengthen fine motor skills!

Did you know that sensory play can cause the brain to make new connections and grow? This is one of the many reasons I love sensory play! Add some cups and spoons and this will also help your child strengthen their fine motor skills. See our full list of sensory activities for more sensory play ideas!

Older kids can enjoy making the oobleck, experimenting with the amount of corn starch to water to make the perfect non newtonian fluid. They will be amazed to see how the mixture. can be both a solid and a liquid at the same time.

If you makes lots of oobleck, you could even try to walk on top of it! Kids will see that if they walk quickly it will stay solid, but if they walk slowly, their feet will sink into the liquid!

More Sensory Bases to Explore

Here are my top picks for toys you can buy that strengthen toddler fine motor skills!

The Ultimate Slime and Putty Kit

This kit includes 8 fascinating varieties of slime and putty, including premade putty, magnetic slime, glow in the dark putty, and so much more.

Sensory Sand

Sensory sand is moldable! This bulk pack comes with enough to fill an entire bin for lasting fun! Bonus points for including a storage bin!

Modelling Dough

This modelling dough compound NEVER dries out! It is a fun texture – it is stretchy like play dough, moldable like kinetic sand, and odorless.

Premium Play Dough

This play dough is the cream of the crop! It is ridiculously silky and smooth, lasts for 6 months, and is scented!

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