I posted the green slime directions last week (made without Borax) but here is another set of directions. I have had many requests for it!
Have fun!!
Bartholomew’s Oobleck Recipe
Elmer's Glue and Borax
combine to make Oobleck or GAK or is it Flubber?
Is it a
solid? Is it a liquid? Just what is this slimy, stringy, rubbery stuff? This
variation on slime will probably remind you of a similar substance found in
many toy stores. This is the most popular version of "slime" among
teachers because it's so easy to make and serves as a great visual tool for
introducing students to the properties of polymers.
Materials
Elmer’s Glue® (8 oz bottle of Elmer’s Glue-All)
Borax (a powdered soap found in the grocery store)
Large mixing bowl
Plastic cup (8 oz size works well)
Spoon
Measuring cup
Food coloring
Here’s the
easiest way to make a big batch Elmer’s Slime. The measurements do not have to
be exact but it’s a good idea to start with the proportions below for the first
batch. Just vary the quantities of each ingredient to get a new and interesting
batch of goo.
This recipe is based on using a brand new 8 ounce bottle of
Elmer’s Glue. Empty the entire bottle of glue into a mixing bowl. Fill the
empty bottle with warm water and shake (okay, put the lid on first and then
shake). Pour the glue-water mixture into the mixing bowl and use the spoon to
mix well.
Go ahead… add a drop or two of food coloring.
Measure 1/2 cup of warm water into the plastic cup and add a
teaspoon of Borax powder to the water. Stir the solution – don’t worry if all
of the powder dissolves. This Borax solution is the secret linking agent that
causes the Elmer’s Glue molecules to turn into slime.
While stirring the glue in the mixing bowl, slowly add a little
of the Borax solution. Immediately you’ll feel the long strands of molecules
starting to connect. It’s time to abandon the spoon and use your hands to do
the serious mixing. Keep adding the Borax solution to the glue mixture (don’t
stop mixing) until you get a perfect batch of Elmer’s slime. You might like
your slime more stringy while others like firm slime. Hey, you’re the head
slime mixologist – do it your way!
When you’re finished playing with your Elmer’s slime, seal it up
in a zipper-lock bag for safekeeping.
