Beth Harris, Raleigh mom and science educator, returns today with a really fun and easy experiment for kids to try - invisible ink! All you need is a piece of paper, milk with some amount of fat in it ...
To make invisible ink, you only need a few ingredients - and a lot of patience! Grab a lemon and watch how it's done. Full-Time Kid is available to stream on pbs.org and the free PBS App, available on ...
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