1/2 cup water
1/2 cup white glue
Mix these two well. Slow mixing is best.
1 cup of water
1 tsp of borax- the 20 Mule Team kind
Mix this well.
Add a little bit of the borax mixture to the glue/water solution and stir with a craft stick. Keep adding until slime forms on your stick.
You can add glow in the dark paint to the glue/water solution but start with just a little paint and add more if you need it.
How does adding more borax change the slime?
I have found that slime will store for a while in an air tight container. I will develop mold and toss it if it gets dirty. You can always make more!
If you have older children, teach or just a chemistry nerd, here is a good lesson plan on slime that really delves in to the chemistry of polymers- and it has actual chemical formulas!