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In this activity, learners will design a way to identify a powder found at a crime scene by comparing it with known powders, with the goal of solving a crime.

Learners build a simple one-cell battery and use an ammeter to measure the flow of current.

Using electrolysis, learners produce hydrogen gas and oxygen gas from water molecules in a solution.

In this two-part activity, learners will extract their own DNA from their cheek cells and learn how DNA is analyzed and used to solve crimes.