Recipes for Sensory Materials



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Recipes for Sensory Materials

The flubber and gluep are both kind of like silly putty. Those at the end were contributed to the early childhood mailring by Mary Ann Kohl. There are a lot of similar ideas in Mudworks.



Oobleck
Mix:
4 boxes of cornstarch
63/4 cups of water
15 drops of food coloring

Let stand. Stir with hands 15 minutes before needed for class. Cover work area with newspaper.


Do NOT pour or dispose of in drains.


Directions:

Pour the contents of the smaller container into the larger container a little at a time constantly stirring. Do not stop stirring and do not pour all of the small container in at once, do it a little at a time. Gently lift and turn the mixture in the large container until it forms. It will hold its shape as long as it is manipulated, but if left alone, it will lose its consistency. It will also pick up newsprint like silly putty and bounce.


Flubber
Spread newspaper down on a flat surface.

In a large container, mix:


1 1/2 cups warm water
2 cups white glue
2-4 drops of food coloring
In a small container, mix:
1 1/3 cups warm water
3 tsp. Borax powder
Stir until dissolved


Directions:
Several hours before hand, mix borax solution of 60 ml borax (1/4 cup) to 1
liter water; completely dissolve borax and set aside. Mix borax solutions, water, food coloring and glue, stirring constantly until gluep takes form.
Remove from cup and work in palm. Try using as silly putty.

Gluep
It has the properties of both a solid and a liquid. Here is the recipe:
per child:
1TBS Elmer's Glue
1 TBS Water
2 TSP Borax solution--60 ml borax + 1 L water
measuring spoons
plastic cups
spoon or coffee stirrers
food coloring (optional)

Adaptations:
Use model magic on a chopstick to stir
Use dosage cups or droppers for measuring
Mount cups in muffin tin to prevent spillage
(place sticky tac on the bottom of the cup)
Use rubber shelf liner to hold items in place.

Note: This is not edible!




Directions: Mix 1 Tbsp. (15 ml) contact wetting solution (containing polyvinyl alcohol -generic brands work well) with tsp.. (10 ml) of the borax solution. A film canister works great for this.

Pour the solution in your hand. It is endothermic!


This can also be poured out on a metal jar lid to make a plastic film.
Slime
Borax Solution
1/2 tsp borax (2 ml)
1/2 cup water (125 ml)
Mix thoroughly

Here are a bunch of recipes. --- physics-defying "stuff" to make, play with, and learn from.

I like the scientific explanations for some of them.




Directions: Mix together in a mixing bowl using a wooden spoon. Pour the borate solution into the bowl with glue solution. Use your hands to gently lift and turn the mixture until only one tablespoon of liquid is left. Flubber will be sticky for a moment or two. After the excess liquid has dripped off, Flubber is ready. Store it in a plastic bag in the refrigerator. When you are through, discard in a waste can. DO NOT try to wash it down the sink. If it dries on carpet or clothing, cover it with a cloth soaked in vinegar to de-gel it, then wash the area with detergent and water.
FLUBBER
Borate solution:
2/3 cup warm water
1 1/2 teaspoon powdered Borax
3 drops food coloring
Mix together in a 1 cup measuring cup using a
wooden spoon Glue Solution:
3/4 cup warm water
1 cup white school glue
GLARCH
Measure 1/2 cup liquid white school glue into bowl. I get the best results with Elmer's School Glue. Measure 1/4 cup Sta Flo liquid starch into the same bowl. Mix together with a wooden spoon. After the substance becomes too thick to use the spoon, continue mixing with your hands. This works quicker with warm hands. Glarch may be stored in a plastic bag. Wash all supplies.

OOBLECK
Measure 1 1/2 cups of cornstarch and put in a pie pan or container If you want a color of Oobleck add the coloring to the water first. Then gradually add approximately 1/2 cup of water to the cornstarch. Stir well (this will take some time). Add small amounts of more water or cornstarch until you get a mixture which 'tears' when you quickly scrape your finger through it AND THEN 'melts' back together again. Oobleck is often referred to as a 'non-Newtonian' substance because it does not behave as Newton's Third Law of Motion states; for every action, there is an equal and opposite reaction. Applying this principle, you would expect Oobleck to 'splash' when you 'smack' it with your hand. (Smacking is the action, splashing is the reaction.) However, when you try this out Oobleck does not splash. It becomes a solid substance for a few moments. Why? Scientists explain this as follows:

Uncooked corn starch particles are structured in both crystalline and noncrystalline arrangements. When slowly mixed with water, the non crystalline structures of corn starch absorb most of the water. When you smack or stir it rapidly, you increase the temperature and pressure on the mixture which causes more non crystalline structures to form. These new non-crystalline structures absorb more water and the mixture becomes thicker- hence the appearance of a solid. When you discontinue the pressure, the number of non-crystalline structures decrease and water is released, creating the 'soupy' mixture.



GUAR GUM SLIME
Put 1/3 cup warm water into a paper cup. Use a stirring stick and add ΒΌ teaspoon guar gum into the water. Stir until mixed and the guar gum is dissolved. Optional: add 2-5 drops of food color.
Mix thoroughly. While stirring, add about 2 tablespoons 4% borax solution to the guar gum mixture. Once the mixture has gelled, remove the Slime from the cup and
knead it in your hands. Place the Slime in a zipper-type plastic bag to prevent it from drying out. A few drops of Lysol can be added to the Slime to minimize the formation of mold and extend the lifetime of the Slime. You can get guar gum from Flinn Scientific.

POLYVINYL ALCOHOL SLIME
Put 2 tablespoons 4% polyvinyl alcohol solution into a paper cup. Add 2-3drops of food color. Mix Pour in 4% borax solution into the cup of polyvinyl alcohol solution. Stir constantly while the borax solution is being added. Once the gel has formed, remove it from the cup and knead it in your hands. Place the Slime in a zipper-type plastic bag to prevent it from drying out. A few drops of Lysol can be added to the Slime to minimize the formation of mold and extend the lifetime of the Slime.

SLIME OLYMPICS
Experiment with each of the Slimes by squeezing it; forming it into a ball and throwing it onto a tile or linoleum floor; by pulling it gently and then quickly; and by pressing the putty on top of your name written with a water-soluble, felt-tip marker. Note:
Differences: The Guar Gum Slime is less viscous (more runny) and can be stretched further before breaking than the Polyvinyl Alcohol Slime.
Similarities: Both slimes are clear and colorless (if food color is not added), can be molded into
different shapes, will flow from a funnel over a period of time, will bounce (to a certain degree), and will become flat if left sitting on a flat surface.


FUN DOUGH
1 cup corn starch
1 1/2 cup baking soda
food coloring
water
Add water to dry ingredients to desired texture and consistency. Color with food coloring.
LOTION PLAYDOUGH
1 cup flour
1T vegetable oil
2T hand lotion
1/2cup salt
2 t. cream of tartar
1 c water
food coloring
Mix. For kids crafts.


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