Posted Apr 09, 2018 by Elmers
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    Scientific Method with Slime

    A hands-on lab activity with slime!
    • Easy to Moderate

    Supplies Needed

    • 5 fl. oz. Elmer’s Translucent Color Glue
    • ½ 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 ½ 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 ¼ 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.
    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


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