Monster High Skulltimate Science Class Playset with Doll Attend science class with Frankie Stein doll and this play set that features all kinds of monsterrific fun! Press the button on the frog's home to watch him hop up and down! Pour water on the flower to see it "grow"! Fill the beaker with cold water. Then pour the cold water in to one of two paths on the Skullette-shaped funnel. Fill the medicine dropper with warm water to transform the color back Record your observations on the working chalkboard. Dip the sponge "chalk" into cold water, and use it to write on the chalkboard -- your work appears in another color!