Gluep--Experiment:

Teacher Preparation:

1. Prepare 4% sodium borate solution.
2. Prepare color coded recipe cards as follows (using the appropriate copy paper).

   Color	White Glue	Water	Borax
   Green	15 mL	15 mL	10 mL
   Blue	15 mL	30 mL	10 mL
   Pink	15 mL	0 mL	10 mL
   Yellow	15 mL	15 mL	20 mL

Procedure:

1. Put on goggles.
2. Measure out the white glue and pour it into a small cup.
3. Observe the glue. What does it feel like? smell like? look like?
4. Measure out the water and add it to the glue in the cup. Stir with a wooden stick. Repeat your observations.
5. Add a drop or two of the food coloring that corresponds to the color of your recipe card to the glue mixture and stir.
6. Measure out the borax solution. Get someone to help you so you can stir with the wooden stick as the borax (cross-linker) is added to the glue solution.
7. Once the GLUEP is formed, remove it from the cup and knead it for several minutes. Repeat your observations.
8. Compare your product with those made using other recipes.
9. Roll the GLUEP into a ball and set it in the palm of your hand. Does the ball keep its shape?
10. Drop a ball of GLUEP onto a clean table top. Does it bounce? How quickly does it spread out?
11. Record all your observations.
12. Store GLUEP in a plastic bag and discard in trash when finished with it. It will stain funiture and carpeting.