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    The Exploratorium
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    In this activity, learners try to float ink on the surface of water to create a pattern and then capture it with absorbent paper. This technique, called Suminagashi, is an ancient Japanese style of...

    Over $20 per student Ages 8 - 18 45 to 60 minutes
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    Mount Holyoke College
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    In this experiment, learners separate different types of molecules in marker inks (using a technique called "thin layer chromatography"). Learners mark dots at the bottom of a strip of...

    $1 - $5 per student Ages 4 - 8 30 to 45 minutes
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    Oregon Museum of Science and Industry
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    Learners write their initials by applying different clear "magic ink" solutions to separate pieces of paper and then "develop" the inks with other clear solutions. One "...

    $1 - $5 per group Ages 14 - adult Under 5 minutes
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    The Exploratorium
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    With a coffee filter, a black marker, and a cup of water, discover the secret colors hidden in black ink. This activity explores capillary action--how water moves up paper--and chromatography--how...

    1 cent - $1 per student Ages 8 - 18 5 to 10 minutes
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    WGBH
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    In this activity, explore chromatography and the various colors that make up the ink in markers. Use this activity to investigate cohesion and adhesion. The online version of this activity is set...

    1 cent - $1 per student Ages 6 - 11 5 to 10 minutes
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    WGBH
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    In this activity, learners create and reveal secret messages written with invisible ink! The invisible ink is actually a baking soda solution, and the magical revealing liquid is fruit juice. The...

    $1 - $5 per group Ages 6 - 11 45 to 60 minutes
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    Twin Cities Public Television
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    In this activity (page 1 of the PDF under SciGirls Activity: Forensics), learners will use a home video camera with a “night vision” mode to test how various inks appear outside the spectrum of...

    Over $20 per group Ages 8 - 14 30 to 45 minutes
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    Twin Cities Public Television
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    In this activity (page 2 of PDF under GPS: Garbology Activity), learners will prepare sheets of homemade recycled paper from several different source pulps. Once dry, each sample will be drawn on...

    $10 - $20 per group Ages 8 - 14 1 to 7 days
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    American Chemical Society
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    In this activity on page 8 of the PDF (Behind the Scenes with Chemistry), learners make three of Harry Potter's essential school supplies: quills, ink, and color-changing paper. Learners use...

    $10 - $20 per student Ages 8 - 14 1 to 7 days
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    American Chemical Society
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    In this activity on page 3 of the PDF, learners create a collage by using vinegar to transfer color pictures from a newspaper onto a piece of white paper. Investigate how newspaper ink does not...

    $1 - $5 per student Ages 6 - 14 10 to 30 minutes