Kid Activities
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Goop, Gak, Slime & Fun Recipes!

September 21, 2009 20:29 by Barbara Shelby

These are the popular science activities of Oobleck, Goop, Gak, Flubber and Slime! Do these often as Kids of all ages love them!!! Also included are directions for concoctions such as Modge Podge, Stickers, Chalk and Paper Mache! Enjoy!

 You may also be interested in...More than 40 Paint & Color Recipes well as 40 Play Dough Recipes



Take a cup of cornstarch add to a bowl...
Take a cup of baking soda add it to the bowl...
Take 1/2 cup of water and add it to the bowl...
Mix with your hands-they will get messy a bit and the "Liquid but Not" will harden-- then soften --then drip while you form and play with it.
It comes off with a little soap and water! (Submitted by Anonymous) 

NOTE: 'Liquid but Not' (above) and 'Slimish Goop' (below) are very similar. The first is more firm/hard. The second is similar to mucous as it goes through the fingers and hands. It's 'slimier' -- as the title denotes. (See below photo) For either activity, add drops of water as needed--to keep the consistency as desired. You'll find that for any of these 'experiments' adjustments will be needed--which is O.K. It's science!!! Be sure to remind kids that this is what it's all about...experimenting to see 'what' happens! 

My grade 4 grandson loved 'Liquid but Not' AND the 'Slimish Goop'. We made both on the same day. He put his hands in both at the same time... as he experimented with the 'sameness and differences' in the textures.


SLIME-ISH GOOP made with cold water... Be sure to read above 'Note'

  • Mix 1 cup of corn starch with 1 cup of water. Use your hands to mix it until it is a smooth texture.
  • You can change the texture by adding a 2nd cup of corn starch. (I added the second cup of corn starch; with just one cup-I found it too watery. If making a smaller amount with 1 cup of corn starch--start with 1/2 cup of water.  Barb)
    Kids love adding food color or paint to make the slime. They have fun making it resemble different icky substances and their imagination is more vivid!  (Image by KidActivities)


Two cups Glue
Food Coloring
Four tablespoons Borax
Warm water
In one bowl mix in 1 1/2 cups of warm water, Glue, and food coloring. In a separate bowl mix in Borax with 1 1/3 cup of warm water.
Pour the glue mixture into the borax mixture.
Do not mix or stir it will form on its own. (Note: I found I needed to stir it a bit for it to come together. The second day, it was even better than the first day! See K-A images... You'll find it shapes itself out smoothly into what ever you store it in. Barb) Store in plastic baggies.

What can you do with Flubber?

Stretch and shape it...
Roll it into a rope...Bounce it...


Put 3 T. of water into a ziploc bag.
Add 1 T. of white glue.
1. Add 2 heaping T. of Borax (laundry detergent). It must be Borax.
2. Shape into a ball.
3. If the mixture is too sticky, roll the ball in a little bit of Borax. Too much water left? Empty it.



Ingredients: ½ cup glue and two Cups Borax
1. Mix ½ -cup water with ½ cup glue. In a separate container, mix ½ cup water with the Borax (Borax can be purchased in the laundry detergent aisle).
2. Now, stir the Borax mixture while slowly adding the glue mixture.
3. It should immediately come together to make blubber. If it isn't quite right try adding more of the Borax and water. 


One part Liquid starch
Two parts white glue
Food coloring
Add starch to glue until mixture becomes a workable ball. Store in refrigerator in a covered container.

NOTE: I made this awhile back and it's important to drip the starch slowly into the glue. If it's stringy--add a drop of glue.
If too hard-- add more starch. At first, I thought it wouldn't work--but kept playing with the ingredients. The four children involved in the experiement -ages 5 to 15- all loved it! Although kids played with it immediately, it became runny from the hot day---Chill for 2-3 hours.  Also, the children's hands (and mine) did stain when mixing in the food coloring. With a couple hand washings, the color in the hands did come off.

NOTE FYI: The older children recognized the concoction as one they purchased in 'cups that make loud body sounds"...the kids packed the finished mixture in paper cups--pushed the mixture down--and laughed at the resulting loud sounds. 


Glue (wood glue works well but white glue will also work)
Epsom salts
Measuring spoons
Plastic spoon
2 small cups
Waxed paper
Plastic bag (optional)
1. In one cup, put 1/2 tsp Epsom salt and 1/2 tsp water, stir to dissolve salt. (NOTE: It may not all dissolve.)
2. In the other cup, put 1 tablespoon glue. Add the Epsom salt water to the glue and stir.
3. Watch as your new material starts to form. Pull out the putty and put it on the waxed paper. You can experiment with it to find out more about its properties.
4. You can store the new putty in a plastic bag.

GENERAL HANDLING INFORMATION: Store in a ziploc bag in the refrigerator for maximum life. A few drops of Lysol can be added to recipes to minimize formation of mold and extend the lifetime. Wash hands before using slime to minimize mold growth as well.....Keep off carpets and furniture as it can stain...

For Flubber & Blubber: BORAX IS TOXIC IN LARGE DOSES.....Keep it out of reach of children under 3 year old; it's also a good idea to wear safety glasses when working with borax.

When you mix the glue and the borax a chemical change occurs in the polymer in the glue, polyvinyl acetate.
Cross-linking bonds are formed, making the glue stick to you less and to itself more. You can experiment with the amount of glue, water, and borax that you use to make the slime more fluid or more stiff.
The molecules in the polymer are not fixed in place, so you can stretch the flubber/blubber/slime.



You Need:
1 tsp Metamucil or similar soluble fiber
8 oz water
microwave-safe bowl
microwave oven
food coloring (optional)

Mix 1 teaspoon of Metamucil with 1 cup (8 ounces) of water in a microwaveable bowl. You can add a drop or two of food coloring if you wish. Alternatively, you could add a little powdered drink mix or flavored gelatin to get color/flavor.

Place bowl in the microwave and nuke on high for 4-5 minutes (actual time depends on microwave power) or until the goo is about to bubble out of the bowl. Turn off the microwave.

Let the mixture cool slightly, then repeat step 3 (microwave until about to overflow). The more times this step is repeated the more rubbery the substance will become.

After 5-6 microwave runs, (carefully - hot hot HOT) pour the flubber onto a plate or cookie sheet. A spoon can be used to spread it out.

Allow to cool. What you have is a Non-stick flubber. A knife or cookie cutters may be used to cut the flubber into interesting shapes.


One 14- ounce can of sweetened condensed milk
One Tbs of cornstarch
10-15 drops of red or green food coloring
1.  Pour the can of SWEETENED condensed milk into a saucepan.
2.  Add the cornstarch and cook over a low heat, stirring constantly.
3.  When the mixture thickens remove it from the heat and then add the food coloring.
4.  Allow it to cool before playing or eating; it can also be used as a fun paper paint.



Mix together 5-6 drops of food coloring and ½ c. salt---stir well.
Cook in microwave for 1-2 minutes or spread out on a piece of waxed paper to air-dry.
Store in an airtight container.


1 Tbs. cold cream
2 Tbs. cornstarch
1 Tbs. water
Food coloring
Clean paint brush
Mix all ingredients together, stirring to mix well. Use a thin
paintbrush to apply the tattoo.


Favored drink mix
1 cup vegetable shortening
Food coloring
Small container such as a film container
1. Mix one packet of drink mix with shortening.
2. Add in a few drops of food coloring that matches the flavor. ie: yellow for lemon.
3. Pack in small container, such as a film container, and you have wonderful tasting and smelling lip gloss. Of course the lip gloss is edible should some accidentally be licked off.


(Transferring a picture to paper)

2 tablespoons soap powder, like Ivory Snow (not detergent) or scrapings from a bar of soap
1/4 cup hot water
1 tablespoon turpentine
Dissolve soap powder in hot water.
Add turpentine.
Use when cool.
To use, dip a brush into the ink and brush over the picture to be transferred, wait about ten seconds then place a piece of paper over the picture and rub the back of it with a spoon.
The picture will be transferred to the paper.
If the solution solidifies in its container, set the bottle in a pan of warm water to melt, then shake well before using.



Cut or tear 2 T crepe paper of a single color. The finer the paper is cut, the smoother the paste will be. Add 1/2 T flour and 1/2 T salt and enough water to make a paste. Stir and squash the mixture until it is as smooth as possible. Store in airtight container.



1 Cup Flour
1/4 Cup Sugar
 1/4 Cup Salt
3/4 Cup Water
Food coloring
Mix all together and put in squeeze bottle. Drizzle on paper.


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Liquid starch, water, newspaper strips
Mix equal parts of liquid starch and water.
Stir until starch is dissolved.
Soak newspaper strips in liquid mixture and pat into place.

Place 2 or 3 Tablespoons plain flour in a bowl.
Add a little bit of water.
Stir to make a smooth paste.
Gradually add more water until the paste is the consistency of thick cream.
Apply paste with a brush or your fingers.

For 1 to 1 1/2 cups paper mache paste, mix together one cup of flour with 1 cup water. Keep adding water (about 3 cups) and mix until all the lumps are gone. Bring to a boil in a saucepan and cool completely.

Mix 1/2 cup all-purpose flour, and 2 cups cold water.
Add that mixture to 2 cups boiling water and allow it to return to a boil. Remove from heat and add the sugar.
Let entire mix cool and thicken.
Once the mixture cools its ready to use.

White glue,
Mix two parts of the white glue with one part of fairly warm water.
Stir well to produce the paper mache paste.

TIP: Adding Elmer glue to the above flour recipes will give it more strength.


These two recipes are very similar to the purchased product Modge Podge glue.


Mix 3 parts white glue (any brand) to 1 part water.
Add more or less water to get the desired texture and thickness.
Add 2 Tbsp. varnish, for shine.
Store in a glass container with airtight lid.


1/4 C sugar
1/4 C all-purpose flour
1/2 tsp powdered alum
1 3/4 C water
1/4 tsp oil of cinnamon
In medium size pan, combine sugar, flour and alum.
Gradually add 1 cup water, stirring vigorously to break all lumps.
Boil until clear and smooth, stirring constantly.
Remove from heat.
Add remaining water and oil.
Stir until thoroughly mixed.
Store in glass container with airtight lid.
From: Leslie Sausage

MAKE YOUR OWN STICKERS...with this solution

11 tsp. flavored gelatin
2 tsp boiling water
Cut-outs to use as stickers
Place gelatin and boiling water in a small bowl.
 Stir until the gelatin is dissolved. Let mixture cool 1 minute.
While the sticker solution is warm, brush a thin coat on the back of each cut-out - use your finger or a small brush.
When dry you can lick them and stick them on paper or glass just like a real stamp.


1 (1/4 ounce) package unflavored gelatin
1 T cold water
3 T boiling water
1/2 t. corn syrup
1/2 t. lemon or other flavored extract
In a small bowl, sprinkle the gelatin on the cold water.
Let it sit 5 minutes to soften.
Add the boiling water.
 Stir until the gelatin is dissolved.
Add corn syrup and extract. Store in a small jar such as a baby food jar.

  • Cut out pictures from magazines or"whatever".
  • Brush the picture on the back side with the gum.
  • Let it dry, then moisten the gum with water or by licking and stick it to paper.


1/3 c. quick setting Plaster of Paris
3 t. water
1 T. paint
Glitter (optional)
Mix all ingredients.
Scoop into empty toilet paper tube.
Let set for 20 minutes.
Peel off cardboard. Let dry for one day.



MAKE EGSHELL CHALK (Good only for sidewalks!)

This chalk is specifically designed for sidewalks and not black boards!
6 egg shells
1 tsp. very hot tap water
1 tsp. flour

  • Wash the eggshells well; be sure there is no egg left in them;  let dry.
  • Grind shells into a fine pwder with a rock a concrete surface. Make sure the grinding rock is clean. (One Tablespoon of  powder will make one stick of chalk.)
  • When you have enough powder pick out any little bits of eggshell that are  not ground up. 
  • Scoop the powder into a cup or paper towel.
  • Stir the flour and hot water together in a small dish to make a paste.
  • Put the spoonful of eggshell powder into the paste and mix well. It may help to mash it with the back of the spoon.
  • Add a few drops of food coloring if you want colored chalk.
  • Shape this mixture into a chalk stick and roll it up in a strip of paper towel to dry. (Drying will take about three days.)
  • Once dry, peel the paper off one end and you're ready for some sidewalk art.
  • For large sticks of chalk, try making 3 times this recipe, and put the mixture into an empty toilet paper tube. When it's dry, peel away the cardboard as you use it.
    Adapted from

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Also: Check out more than 40 Paint & Color Recipes on this well as 40 Play Dough Recipes!