The Scientific Method and Slime Project

A hands-on lab activity with slime!

supplies needed

? 5 fl. oz. Elmer’s Translucent Color Glue
? ? tbsp. baking soda
? 1 tbsp. contact lens solution
? Bowl
? Mixing utensils
? Measuring spoons
? Cornstarch
? Cotton balls
? Kinetic Sand??

?Kinetic Sand? is a registered trademark of Spin Master Ltd.


  1. Pour the entire bottle of Elmer’s? Translucent Color Glue into the bowl.
  2. Add ? tbsp. of baking soda and mix thoroughly. Add 1 tbsp. of contact lens solution and mix until solution gets thick and slime begins to form.
  3. Take out the slime and begin kneading it with both hands. If needed, add another ? tbsp. of contact lens solution to make the slime less sticky.
  4. Now put on your lab jackets, and let’s get science-y. Divide your slime into three sections of equal size.
    Scientific method and slime
  5. Ask students questions: What do you think will happen to your slime if you add cornstarch, sand, or cotton to it? Have them write out a hypothesis. Then have them add cotton balls to one ball of slime, Kinetic Sand? to another, and cornstarch to the third.
  6. Were the hypotheses correct? Why or why not? Have each student or group of students report their findings to the class.

*Adult supervision is required; this project is not appropriate for children under the age of 3 years. Thoroughly wash your hands before and after making and playing with slime. Warning: If large quantities of contact lens solution are accidentally ingested (greater than a tablespoon), get medical attention immediately.

*Some contact solution brands work better than others, check out our Slime Tips section for all the details