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DIY Edible Slime

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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.

Materials

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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)
Saucepan
Wooden spoon
Heat-safe bowl

Directions

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?

 

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