Materials

PVA glue (has to be PVA, not any other sort of glue), 5% borax dissolved in water (may need heating a little to dissolve), and food colouring and water. Also jug/bowl and stick or something to stir with.

Where to find Borax?? It's a detergent salt, found in hardware stores and some little pharmacies too. Comes in powder form and needs dissolving (As above).

Method

Add 1/4 cup water with few drops of food colouring, stir until evenly mixed. Add 1/4 cup of PVA glue and stir well until mixed and until white glue and water is all the same colour.

Slowly add Borax, stirring continuously and watch the slime form!

Result

More borax = more sticky slime!