Superpower of Sleuthing
Experiment 4: Invisible Ink
Investigate the science of writing invisible secret messages.
Experiment 4 of theSuper Sleuthing superpower series - let's make a secret code revealing pen! Learn how to use the power repulsion with oil and water to make a pen that writes invisible messages that can be revealed only with a secret ingredient! Don't forget to download the full instructional worksheet and parent cheat sheet.