Try this at home..........
Make your own slime like you saw in our class.
1/4 cup water
1/4 cup white glue
stir to combine and add 4-5 drops of green food coloring.
Then add 1/4 cup liquid starch and stir until you don't see any liquid left. You can play with it for weeks, just store in a ziploc when your not playing with it!!