Container 2
1 1/3 cups warm water
3 teaspoons borax

This version is a lot of flubber, you may wish to reduce the amounts.

To do and notice:
1. Mix the ingredients in each container thoroughly.
What do they look like?  How are they different?
2. Pour container 2 into container 1.  Gently lift and turn
      The mixture until only about a tablespoon of liquid is
      Left.  What do you see?  What does it feel like?
      The flubber will be sticky for a moment or two.  Let
      The excess liquid drip off and the flubber will be ready.

What happens to flubber when…
It is stretched?
It is rolled into a ball and bounced?
It is stretched over the opening of a jar?
An object (golf ball, etc.), is rolled on it?

A closer look:
Flubber is a polymer made by a chemical reaction.  Polymers are very long
Chains  of repeating units.  When the two solutions are combined, polyvinyl accetate chains (a polymer from the white glue) are linked together in a 3 dimensional 
Arrangement by borate ions ( from the Borax) and other chemical bonds.  This produces the thick, sticky polymer called Flubber.