Celebrate Dr. Seuss birthday and Read Across America with our easy and oh so awesome Dr Seuss slime to go along with a favorite Dr Seuss book! The Cat In The Hat by Dr. Seuss is a classic children’s book every kid should read or have read to him/her.   Our Dr Seuss slime is also a fun homemade slime recipe.  This would also make an awesome Cat in the Hat party idea!

CAT IN THE HAT ACTIVITY:  DR SEUSS SLIMEDr Seuss Slime Cat In The Hat Slime Sensory Play for Dr. Seuss science activities

Dr Seuss Sensory Play!

We have plenty of Dr Seuss activities for you to check out all month long! Of course, we love Dr. Seuss all year long, and we live right next door to Springfield, MA which is the town, Dr Seuss or Theodore Geisel was born.

You can make this Dr Seuss slime to celebrate Dr. Seuss and Read Across America this year and check science, sensory play, and literacy off your lesson planning list with one fun activity. Throw in a little math with measuring ingredients as well!

Make a The Cat in the Hat hat with our easy Dr Seuss slime recipe below and enjoy with your favorite Dr. Seuss book!  Whip up a batch of Dr Seuss slime today and your mother will not mind if you do! Make sure to check out our Lorax slime too!

Cat In The Hat Slime Dr Seuss Slime Dr Seuss Book Activity


All of our holiday, seasonal, and everyday slimes use one of five basic slime recipes that are super easy to make! We make slime all the time, and these have become our go-to favorite slime recipes!

For this fun Dr Seuss slime we make two batches of our Liquid Starch Slime recipe.

Slime with liquid starch is one of our favorite sensory play recipes!  We make it ALL the time because it is so quick and easy to whip up.   Three simple ingredients {one is water} are all you need.  Add color, glitter or sequins, and then you are done!

Where do I buy liquid starch?

We pick up our liquid starch in the grocery store! Check the laundry detergent aisle and look for the bottles marked starch. Ours is Linit Starch (brand). You might also see Sta-Flo as a popular option. You can also find it on Amazon, Walmart, Target, and even craft stores.

But what if I don’t have liquid starch available to me?

This is a pretty common question from those who live outside of the United States, and we do have some alternatives to share with you.  Click on the link to see if any of these will work! Our saline solution slime recipe also works well for Australian, Canadian and UK readers.

Now if you don’t want to use liquid starch, you can absolutely test out one of our other basic recipes using saline solution or borax powder. We have tested all three recipes with equal success!


What’s the science behind this Cat in the Hat theme slime? The borate ions in the slime activators  (sodium borate, borax powder, or boric acid) mix with the PVA (polyvinyl acetate) glue and forms this cool stretchy substance. This is called cross-linking!

The glue is a polymer and is made up of long, repeating, and identical strands or molecules. These molecules with flow past one another keeping the glue in a liquid state. Until…

When you add the borate ions to the mixture, it starts to connect these long strands together. They begin to tangle and mix until the substance is less like the liquid you started with and thicker and rubberier like slime!

Picture the difference between wet spaghetti and leftover spaghetti the next day. As the slime forms, the tangled molecule strands are much like the clump of spaghetti!

Is slime a liquid or solid? We call it a Non-Newtonian fluid because it’s a little bit of both!

Did you know that slime aligns with the Next Generation Science Standards (NGSS)? 

It does and you can use slime making to explore states of matter and its interactions. Find out more below…

Dr Seuss Slime Cat In The Hat Book activity Cat In The Hat Slime


Creating both a white glue slime and a clear glue slime gives a unique look to this fun Dr. Seuss slime.

I always encourage my readers to read through the recommended slime supplies list and How To Fix Slime Guide before making slime for the first time. Learn how to stock your pantry with the best slime ingredients.

Check out the liquid starch slime video too!


  • 1/2 Cup of PVA Clear Glue or White Glue (Use a 1/2 cup of each for this Seuss slime)
  • 1/4 Cup of Liquid Starch (you may need up to a 1/2 cup per batch depending on brand)
  • 1/2 Cup of Water (per batch)
  • Red food coloring, confetti, glitter, and other fun mix-ins


STEP 1:  In a bowl mix 1/2 cup water and 1/2 cup of clear glue (mix well to combine completely).  This will make a batch of red slime.

STEP 2: Now’s the time to add a few drops of red food coloring! 

STEP 3: Pour in 1/4 cup of liquid starch. You will see the slime immediately start to form. Keep stirring until you have a gooey blob of slime. The liquid should be gone.

STEP 4:  Start kneading your slime! It will appear stringy at first but just work it around with your hands and you will notice the consistency changes. You can also put it in a clean container and set it aside for 3 minutes, and you will also notice the change in consistency! 

STEP 5:  Repeat STEPS 1 to 4 to make a second batch of white slime.  Use white glue instead of clear glue and leave out the food coloring.

Make your own Cat In the Hat hat with your red and white Dr Seuss slime!
Cat In The Hat Slime


Your Dr Seuss slime will last for quite a while, even months with the right storage method. When you are not playing with your slime keep it covered in an airtight container. Anything from deli style containers, to mason jars, to reusable plastic food containers, to slime specific jars! We use them all and can see some storage options here.

Cat In The Hat Slime Dr Seuss Slime



Click on the image below or on the link for more awesome Dr Seuss science activities.

Seuss Science Activities to go along with Dr. Seuss Books