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This activity is about collecting and analyzing DNA as part of a criminal investigation.

In this hands-on activity (on page 2 of the PDF), learners experiment with lemon juice and paper to create a message that can only be revealed using chemistry.

In this chemistry activity (page 6 of the PDF), learners observe a chemical change. Learners write and reveal a secret message using edible ink.

Learners observe different paper samples under ordinary room light and under a black light to learn some of the chemical differences between different types of paper.