DIY Edible Slime
Slime-like substances can be found in many places in nature -- the trail left behind by a snail, the goo inside of an aloe plant or the hagfish's defense when predators come too close. Here's how your child can make super squishy (and edible!) slime.
Two cups water
Three heaping teaspoons of Tapioca Flour (calso called Tapioca Starch)
All natural food coloring (optional)
One teaspoon small pearl tapioca (optional + works best if you soak in water for several hours before cooking)
1. Combine the water and tapioca in a saucepan and stir until dissolved. Add five drops of food coloring (optional).
2. Bring to a boil over medium-high heat while stirring constantly. You will notice the color change from opaque to transparent.
3. Reduce heat and continue cooking for 5 to 10 minutes.
4. As the mixture starts to thicken, use the spoon to scrape along the bottom and the sides.
5. When the slime is ready, pour into a heat-safe bowl and let cool. Less time will produce a more liquid-like slime. Boiling the mixture longer will make it gooier. The mixture will continue to thicken overnight.
Talk About It
Use the slime to engage your child in a converstation about the chemistry and composition of the slime. What does the slime feel like? Is it a liquid like water? Or is it solid like a rock?