Our daughter absolutely loves getting hands-on and trying out new things. We recently made ourselves some green goo. - Boy was it messy and tons of fun. What you need to make your goo: 1/2 cup of water 1 cup of cornstarch Food coloring (color of your choice) 1 bowl It's pretty simple, add your cornstarch to your bowl and then slowly pour your water into the bowl. Add a few drops of food coloring- using your hands mix the mixture together.- This part is tons of fun.- Get into it! Our daughter allowed the mixture to go between her fingers. She squished it together and also rubbed it between her fingers. Of course, don't forget to ask your little one a few questions about the mixture. Questions asked: What will happen when the cornstarch is added to the water? Will it thicken up? Become solid? Is the mixture thick, gooey, or slippery? Have fun!