Mix together 1 cup (236.58 mL) of school glue and 1 tbsp (14 g) of baking soda. Pour 1 cup (236.58 mL) of school glue into any kind of bowl. Add 1 tbsp (14 g) of baking soda and mix it in thoroughly using a metal spoon. This recipe creates slime that has a consistency similar to slime made using Borax.