What three ingredients are neded to make goopy slime?

Mix 1 teaspoon borax in 1 cup of warm / hot water.

Stir until the borax is dissolved. In a separate container, mix 1/2 cup (4 oz) white glue with 1/2 cup steaming hot water. Add food coloring, if desired and mix well. Pour glue mixture into borax mixture and stir vigorously.